13. Carol notices that the number of customers who visit her coffee shop varies inversely with the average daily temperature.

I’m not going any further. This is horrible.

6. What is the translation that maps the function $f(x) = x^2 - 1$ onto the function $g(x) = x^2 + 1$

(1) $T_{0,2}$

(2) $T_{0,1}$

(3) $T_{1,-1}$

(4) $T_{-1,1}$

January 28, 2009 am31 2:27 am 2:27 am

yes!! i agree i have been studiing like crazy and never saw thoes problems like number 13 and 6.. i hope i past ='[

May 20, 2009 pm31 6:15 pm 6:15 pm

im sorry youve never seen that problem before???? its #1 its sooo simple

June 24, 2009 am30 8:48 am 8:48 am

i agree that number was the simplest question, and its been on multiple math b regents that have been given in the past…

June 23, 2009 pm30 8:13 pm 8:13 pm

pass*

January 28, 2009 am31 2:30 am 2:30 am

The answer for that one was a.
Just take the original vertex, do the translation, and see if you end up with the other vertex.
The proof was fun though.

January 28, 2009 am31 2:39 am 2:39 am

The Proof was a mess. And the Logarithmic Regression was something we’ve never seen before.

January 28, 2009 am31 2:44 am 2:44 am

I had both transformations and inverse in my cirriculum. Although, the one with log regression, short answer. I have never seen anything like that. I put it into logistic into the calc and it gave me error domain. The real answer was to use log natural, which is not Math B, but rather Calculus. I should’ve done linear regression and get 2 points for that, but that question shouldn’t have been on the Jan 2009 regents anyways. lol, for my answer I wrote ‘Error:Domain, no logarithmic equation fits this set of data.’ I’m getting 0 points for that. I didn’t get to check over any other questions because I was trying to figure out that problem. That regents was like no other.

January 28, 2009 am31 2:44 am 2:44 am

My math teacher seen the last two questions and he said oh crap.
lol.
I never seen a logarithmic regression either.
but I worked through it.
The answers were like -15 and 6?
if i remember correctly.
my proof was so long.
like my life story.
and it was in columns
lol

January 28, 2009 am31 2:46 am 2:46 am

Math B is an abomination

i think 13. was 273 or something like that. oh that crazy carol.

January 28, 2009 am31 2:46 am 2:46 am

Where did you get the questions from?

January 28, 2009 am31 2:47 am 2:47 am

I’ve never seen a logarithmic regression either but I worked thru it.
Kinda freaked at first. lol.
The proof was something.
lol.

January 28, 2009 am31 2:48 am 2:48 am

the teachers at my school are fighting the logarithmic equation. Hopefully theyll win and everyone will get 6 points for it!

June 24, 2009 am30 8:51 am 8:51 am

the logarithmic regression was also something taught in our curriculum before….wasnt that the one that was log 8 of something? if im remembering correctly all you had to do was turn that into exponential form and it was like 8 ^(2/3)= x plus whatever number it was and solve….if thats the right problem everyones talking about then the answer’s 3

June 24, 2009 pm30 3:48 pm 3:48 pm

i agree. idk why everyone thinks that was so hard. the log thing actually wasnt the hard question if u asked me.
i was sorta upset they brought bacdk freshman year proofs lol

June 24, 2009 pm30 8:00 pm 8:00 pm

You are referring to the June test; these posts are referring to January’s exam.

January 28, 2009 am31 2:53 am 2:53 am

The two graphs took me a while.
The one with the circle and hyperbola with 4 points of intersection was hard to draw for me. Kept messing up. lol.
The reflection/dilation question also was annoying. lol.
When I first put the regression in my calculator, it said domain error, but then I noticed I entered the #s wrong.
And after I put them in the right way, my r value was like .99 so I knew it was good.

January 28, 2009 am31 2:56 am 2:56 am

does anyone have a copy of the test or know when jmap will have it up?

January 28, 2009 am31 3:16 am 3:16 am

When will the test and its answers be on the web?

January 28, 2009 am31 3:41 am 3:41 am

I’m pretty sure that the Circle and Hyperbola graph had only two intercepts. Correct?

January 28, 2009 am31 3:44 am 3:44 am

no it had four points they were (-4,-3) )(-3,-4)(4,3)(3,4)

January 28, 2009 am31 3:45 am 3:45 am

The circle and hyperbola had 4 points.
I remember doing the same question during Math in October.
Anyone have a site with the questions?

January 28, 2009 am31 3:47 am 3:47 am

did anyone get 41.4 degrees for the measure of angle A? i am a little confused

the test was ok except for the logarithmic regression thing.
and did anyone use ASA (angle side angle) to do the proof?

January 28, 2009 am31 3:49 am 3:49 am

and the parallelogram ?
andd the measure of angle a

18. January 28, 2009 am31 3:50 am 3:50 am

As somebody who’s not a math teacher, what’s the problem with #13? Is it that the question becomes just an exercise in jargon?

June 24, 2009 pm30 3:50 pm 3:50 pm

wasnt #13 the one with the graph?
the anwerr was trigonometric.
it was a sin graph so it wasnt logarimetic or w.e. it wasnt exponetial and it def. wasnt quadradic. even if you dont know waht trigonometric was, i mean u so could have ruled the other ones out lol.

June 24, 2009 pm30 11:10 pm 11:10 pm

they’re talking about the January 2009 regents XD

January 28, 2009 am31 3:56 am 3:56 am

Yes to 41.4
Yes to ASA.
Proof you had to use :
a. vertical Angles are congruent (Vertical Angles Theorem(
b. the two segements of opposite sides of the rhombus are equal (definition of a rhombus)
c. this is where it gets tricky :you can either use the transitive property of equality with a lot of reasoning as I did (i.e. sum of quadrilateral angles is 360; they share 1; another pair of angels are equal and so on) or you can use some subtraction postulate.
Then Conrresponding parts of congruent triangles are congruent.

parralelogram was 30 units squared.

20. January 28, 2009 am31 3:58 am 3:58 am

CherryBlossom, I used ASA for the proof, but they are not my forte.

I heard the teachers in my school are going to argue the logarthmic one because it isen’t in the curriculum, so hopefully.

21. January 28, 2009 am31 3:59 am 3:59 am

Paul, what did 13 have to do with?

June 24, 2009 pm30 7:03 pm 7:03 pm

13 is just a picture should not be a problem use process of elimination

January 28, 2009 am31 4:02 am 4:02 am

13 is the one above.
Personally, I don’t see anything wrong with it.
Just set up a proportion
Y2/Y1 = X1/X2

January 28, 2009 am31 4:13 am 4:13 am

I just put 30 for the parallelogram, not 30 units squared. I spent all my time on that stupid log regression. Didn’t check over my test.

January 28, 2009 am31 4:16 am 4:16 am

for number 13 i did a proportion and the log regression…i gave up…and the proof…4get about it i do not understand proofs 1 bit

25. January 28, 2009 am31 4:18 am 4:18 am

Does anyone know when the results for the tests will be given back?

Also, when will the test and its answers be on the internet?

January 28, 2009 am31 4:35 am 4:35 am

for thirteen i set it up as a percent problem and cross multiplied and got 100. I dont know if that is right. I thought I had to use the law of sins, i tired it and it didnt work.

January 28, 2009 am31 4:36 am 4:36 am

to make that more clear, i didnt use percent.. just set it up like that.

January 28, 2009 am31 4:43 am 4:43 am

#13 was 257 or 256.

January 28, 2009 am31 4:47 am 4:47 am

for thirteen i also got 100.

January 28, 2009 am31 4:48 am 4:48 am

(160)(40)=25x so x=256

January 28, 2009 am31 4:53 am 4:53 am

i think the answer to question # 13 was 256
i did 160 X40 = 25 X
6400 / 25 = X
X= 256
thatz how i did it
thanks everyone for clearing my confusion =)

January 28, 2009 am31 4:56 am 4:56 am

OMG I SERIOUSLY FROZE DURING DAT TEST…i hope i passed

January 28, 2009 am31 5:04 am 5:04 am

OMFG THAT WAS SO FREAKIN HARD IF I PASS IM GUNNA HUG A TREE!!!

January 28, 2009 am31 5:07 am 5:07 am

WTF! THE MATH B REGENT CAN GO SUCK MY DICK!

January 28, 2009 am31 5:10 am 5:10 am

256 is correct.
Hopefully I get my grade tomorrow.
The proof was a bit challenging but I think I got 6 points or they may deduce 1 point because I didn’t mention the subtraction postulate or something like that.
Does someone have a picture of the proof.

January 28, 2009 am31 5:17 am 5:17 am

does anyone know the answer (roots) to the equation
X^2 + 7 = 2x in the a + bi form?
i think this was the question from the regent
i think it was in part 3

January 28, 2009 am31 5:27 am 5:27 am

seriouslyyy this was horrible. the logreg problem was a pain. never doing this again.

January 28, 2009 am31 5:28 am 5:28 am

January 28, 2009 am31 5:37 am 5:37 am

cheery – they were 1 + i SQrt6 and 1 – i Squareroot 6

January 28, 2009 am31 5:40 am 5:40 am

the part 4s were the only thing that were hard. for the log regression one you had to type in the lists and hit log reg (its a few below linear reg on the ti-83). to find the last answer (which was 6 btw) you had to know that ln is just a log base e. so hit e^whatever was on that side and u get an answer of 6. The proof wasn’t that bad… if u recognized the subtraction postulate then you were fine

January 28, 2009 am31 5:49 am 5:49 am

On my ti-84 its lnreg.

January 28, 2009 am31 5:51 am 5:51 am

i think the answer for X^2 + 7 = 2X was X = 1+6i, 1-6i
and the answer for 13. was definitely 256
as far as the logarithmic regression, it was in my curriculum in that we learned how to do line of best fit. since logarithmic showed a domain error and the rest of the regressions didn’t make sense i just used lnreg
i got -16 when i rounded part b and i think i messed up part c because i wasn’t sure if natural logs could be used the same way as logs
ASA for the proof, then corresponding sides of congruent triangles
for the r270 of D2 i did (2x, 2y) for the dilation then took those answers and did (y,-x)
was the answer for the sum and product of the roots choice (3), 2x..something?
oh, and how do you write out the answer to the question about absolution value of something is less than or equal to 11. i was okay with the roots, but i suck at writing out solution sets

anyway, it was one of the harder regents that i’ve seen. bleh

January 28, 2009 am31 5:55 am 5:55 am

the answer to thirteen in 100, because it varies INVERSELY which means y/x
doing 160 x 40 would be varying directly or whatever.

January 28, 2009 am31 5:56 am 5:56 am

Anyone remember the answer to Arc Sin (-sqr2 / 2 )? O_o

January 28, 2009 am31 5:58 am 5:58 am

the solution set you had to do to < and equal to on BOTH sides of x.
like it was -11 on the left, and +11 on the right
and #13 was 100 because the directions said varies INVERSLY which means y/x
when it varies directly, it wouldve been 160 x 40

January 28, 2009 am31 5:59 am 5:59 am

R270 is clockwise or counterclockwise?

January 28, 2009 am31 6:01 am 6:01 am

i hope i passed so i can tell math b to suck it

January 28, 2009 am31 6:09 am 6:09 am

R270 is counter clockwise

January 28, 2009 am31 6:09 am 6:09 am

inverse variation is taught as xy=k or y=k/x. since k is a constant, if ab=k and cd=k, then ab=cd. the inverse part means that as one value increased the other decreases, since you’re using multiplication. that’s why an inverse variation is shown as a curved line on a graph, whereas a direct variation is shown as a straight line.
you can look it up online, but im positive cause its used in chem in a lot of situations

50. January 28, 2009 am31 6:09 am 6:09 am

I actually think it was a pretty fair regents. I have done much harder and after looking at passed regents’, I noticed a lot of the same type of questions.

January 28, 2009 am31 6:12 am 6:12 am

what’s the answer for #6 ?

January 28, 2009 am31 6:15 am 6:15 am

anyone still remember the question or answer to that sum of the root and product of the root question?

January 28, 2009 am31 6:15 am 6:15 am

Aww dammit, I put (-y,x) as a 270 degree clockwise.

January 28, 2009 am31 6:19 am 6:19 am

The answer was 3 or the one with 2x^2

January 28, 2009 am31 6:19 am 6:19 am

what did you guys get for the question
Cot (x)/ Cosx

and for the Arc Sin thing
i got -(pi sign) / 4

January 28, 2009 am31 6:21 am 6:21 am

cotx/cosx was cscx
and i got the same answer for arc sin

January 28, 2009 am31 6:21 am 6:21 am

the answer to the sum of the roots and product was
2x^2 -12x-18
the product was -9 and the sum was -3

thank you for helping with questions =)

January 28, 2009 am31 6:23 am 6:23 am

whats # 6 ?

January 28, 2009 am31 6:26 am 6:26 am

whats # 6 someone please REMEMBERRR ?!?!?!?!??

January 28, 2009 am31 6:29 am 6:29 am

cherry what grade are you in

January 28, 2009 am31 6:31 am 6:31 am

January 28, 2009 am31 6:32 am 6:32 am

what was the answer to the question where you had to determine which kind of circle or graph it was when it gave you the equation ? i think i put (1) . is that rite ?

January 28, 2009 am31 6:35 am 6:35 am

i think 6. was (1) T(0,2)
the answer to the question with the graphs was an ellipse i think, im pretty sure it was 1

January 28, 2009 am31 6:38 am 6:38 am

what was #1 ?

January 28, 2009 am31 6:40 am 6:40 am

1

January 28, 2009 am31 6:44 am 6:44 am

1 was… what was the question?

January 28, 2009 am31 6:48 am 6:48 am

umm idk ? lol sorry all i know was i put 4 as the answer

January 28, 2009 am31 6:49 am 6:49 am

question # 1 choice (4) ( -3,-1)
# 6 was choice (1) (T 0,2)

what did you guys get for the question where it said the measure of the angle in radians was 2.5 and the arc lenth was 20 what was the radius?

and then there was another question like what would be the equation for the 4 circle if the radius of the circle got bigger by one for each circle?

January 28, 2009 am31 6:49 am 6:49 am

what was the answer to the question where there was a circle with 2 chords and it gave you 3 measurements and wanted the last one ? was it 12 or somethin like that ?

January 28, 2009 am31 6:49 am 6:49 am

The test was fair. The log regression wasn’t that difficult, and yes you had to use natural log (ln). Question #13 was indeed 100, because it varied inversely. The graph of the circle and hyperbola did have four points of intersection. The proof was probably the most difficult part of the test, and I also used ASA; the way I came to that was using vertical angles and a parallel line cut by a transversal, plus the common side.

January 28, 2009 am31 6:51 am 6:51 am

January 28, 2009 am31 6:51 am 6:51 am

i got 4 for number 1

January 28, 2009 am31 6:54 am 6:54 am

yeahh i got 4 alsoo for #1

January 28, 2009 am31 6:55 am 6:55 am

the question with the diving board is 10ft blah blah…the answer is 8ft
btw…

January 28, 2009 am31 6:56 am 6:56 am

does anyone remember the answer for the question with the bacteria? it was like b=100(2^t)…..i got 9 as my answer

January 28, 2009 am31 6:58 am 6:58 am

does anyone know the answer to the question with the bacteria? it was like b=100(2^t)….i got 9 as my answer

January 28, 2009 am31 7:00 am 7:00 am

How is Question 13 100? Proof please.

January 28, 2009 am31 7:01 am 7:01 am

it isnt they wanted an inverse its 256

January 28, 2009 am31 7:05 am 7:05 am

Not sure what my answer was but, you had to change the sign of the points to fit into the equation of a circle and if the radius of the 4th circle was 4 then you have to square that.

January 28, 2009 am31 7:07 am 7:07 am

yea there is no way 9 minutes can be the answer…..each period was 15mins so how in the world can 9 be the answer for the bacteria lol showw prooofff

January 28, 2009 am31 7:07 am 7:07 am

That was for the question with the circles.

January 28, 2009 am31 7:08 am 7:08 am

They wanted inverse which is 256.
The bacteria one – you guys forgot 1 thing – you have to multiply 9 x 15 because there was 15 groups or whatever in every period and there were 9 periods.

January 28, 2009 am31 7:10 am 7:10 am

Did you remember the questions, or what’s your source?

January 28, 2009 am31 7:10 am 7:10 am

i think i got 12 for the chord thing

January 28, 2009 am31 7:12 am 7:12 am

oh yeah for the bacteria i got 135 minutes

January 28, 2009 am31 7:12 am 7:12 am

they asked for minutes not periods

January 28, 2009 am31 7:12 am 7:12 am

when u put it into the calculater it equaled to the amount of bacteria…52000 i think was the amount

January 28, 2009 am31 7:13 am 7:13 am

9×15=135 minutes
I hope.

January 28, 2009 am31 7:13 am 7:13 am

i didn’t know how to do it so i just guess and check 4 times…i still get full credit right?

January 28, 2009 am31 7:13 am 7:13 am

For number thirteen, the answer was 100 because is you get 160 customers on a day with 40 degrees then on 25 degrees it should be a little more than half.

January 28, 2009 am31 7:13 am 7:13 am

no not 135 minutes…just 9 minutes

January 28, 2009 am31 7:15 am 7:15 am

nd yea it was 100 cus that was the only choice besides 1000 that went over the amount of customers when the temp was 40

93. January 28, 2009 am31 7:19 am 7:19 am

The answer to #13 was 256.

(a number of commenters have correctly identified this as inverse variation… the product of temp and customers should be a constant, in this case 6400)

January 28, 2009 am31 7:20 am 7:20 am

For the varies inversely thing when one goes down the other goes up.
So since the temp is going down the customers have to go up so it can’t be 100 because then both are going down and that is not inversely. If you take chem, it like the p1v1=p2v2 law. that’s how i remember inverse functions.

January 28, 2009 am31 7:21 am 7:21 am

I messed that question up as well I just realized ang log questions are suppose to be 4 pint question. Why was it worth only two points?

January 28, 2009 am31 7:21 am 7:21 am

no 4get wat i put as comment 92…..256 was the right answer

January 28, 2009 am31 7:23 am 7:23 am

I didn’t realize they were talking about inverse.

January 28, 2009 am31 7:23 am 7:23 am

What you are thinking of is proportions. We are thinking of inverse. Proportions is (40/160)=(25/x). What we and NYSDE are thinking about is, (40)(160)=(25)(x) It is 135 minutes. It said 9 periods, and 1 period = 15 minutes, so how many minutes.

99. January 28, 2009 am31 7:23 am 7:23 am

For number thirteen the answer was 256…they asked for the inverse that means as 1 goes up the other goes down. so if there was 160 customers on 40 degree day then on 25 degree day there should be more people

January 28, 2009 am31 7:24 am 7:24 am

9minutes was not the right nswer…135 possibly but not 9 its impossible …

January 28, 2009 am31 7:25 am 7:25 am

What did you have to do for number 33? Where they asked you in the second part about o ml chill factor?

January 28, 2009 am31 7:25 am 7:25 am

does anyone know the simplified version of V = 4/3(pi)r^3?

January 28, 2009 am31 7:26 am 7:26 am

y is 9 impossible…plug it into ur calculator nd ul see that its 9…also t stands for minutes

January 28, 2009 am31 7:27 am 7:27 am

Oh, I didn’t get that either, they messed me up by adding 3/4.

January 28, 2009 am31 7:31 am 7:31 am

The highest score is 84 points equivalent to 100 %.
I don’t know what I got, but I’m going to retake it in June.

January 28, 2009 am31 7:32 am 7:32 am

What was the answer to the last multiple choice question the one where there was a triangle inside a rectangle. I picked choice 1

January 28, 2009 am31 7:32 am 7:32 am

What was the answer to the question that involved factoring? I got -1.

January 28, 2009 am31 7:33 am 7:33 am

V=4/3(pi)r^3
(3/4)V=(pi)r^3
(3V/4)/(pi)=r^3
r=(3V/4PI)^(1/3)

January 28, 2009 am31 7:37 am 7:37 am

for V=4/3(pi)r^3 you do:
first multiply both sides by 3
so you get 3v=4(pi)r^3
then you divide by 3(pi)
so you get 3v/4(pi)=r^3
then you need to take the third root of both sides
so it look like a square root sign with a little 3 on the bottom left with 3v/4(pi) on the inside =r

and to scope, its out of 88

January 28, 2009 am31 7:37 am 7:37 am

If something is to the 3rd power then shouldn’t it be the cube root?

January 28, 2009 am31 7:39 am 7:39 am

Was that question with the rotation of 270 and dilation of 2 a part 2 or part 3? How many points do you think I will lose for messing up the rotation?

January 28, 2009 am31 7:39 am 7:39 am

Nope, I asked my math teacher it’s different she said this year so it’s not fair. How they did it I don’t know.

January 28, 2009 am31 7:40 am 7:40 am

For you people who took the regents now and are done with math B at the end of the 1st semester, what math are you taking next semester?
For me, no matter what, we still have to take math B second semester. If we get above an 87 though, we can take pre-calc in addition to math b second semester. Then we can take calculus next year if we get above a 75 average in pre calc. I’m in 10th grade.
Are most people in 11th and 10th? and for the last multiple choice i either chose choice 1 or the one next to it. I wasn’t sure on that one.

January 28, 2009 am31 7:41 am 7:41 am

Dilation is two points so that means rotation has to be two points.
So you’ll loose two.

January 28, 2009 am31 7:41 am 7:41 am

To scope, it is cube root. ^1/3 means the same thing as cube root.

January 28, 2009 am31 7:42 am 7:42 am

I think I’ll have a different class. Or I might begin pre -cal in september.
Not sure really

January 28, 2009 am31 7:43 am 7:43 am

If you mess up the rotation, you mess up the dilation because you dilate the rotated points. You will still get points for trying though. Probably 1-2 points dependingon what you did.

January 28, 2009 am31 7:44 am 7:44 am

Thanks, I began panicking during the test and lost sense as to what I was doing.

January 28, 2009 am31 7:45 am 7:45 am

No first you have to dilate then, you rotate. Because it was R 270 o D (2).

January 28, 2009 am31 7:50 am 7:50 am

I kept telling everyone don’t panic because you will just make it harder for yourself to work. be confident. You probably did well. I think I did well overall except for #33
I was there trying to do different things with my calculator for like a half hour. I reset and turned diagnostics on and off and did all this stuff. But its Ln not logisitc which i had not been taught. And a kid asked one of the teachers about it and he went and asked a math teacher who told him it was ln. then the teacher came back and started telling a bunch of kids that it was ln but didn’t tell them all and I wasnt included in being told which really pissed me off. And that teacher was cheating anyways. So all in all that part was unfair.

January 28, 2009 am31 7:51 am 7:51 am

How does that mean you ahve to dilate first?

January 28, 2009 am31 7:52 am 7:52 am

i am a 10th grader and probably going to take pre cal from next semester

i think it doesnt matter if you rotate 270 first then dilate or dilate first and then rotate 270 because you get the same answer

123. 3 triangles in rectangle permalink
January 28, 2009 am31 7:52 am 7:52 am

what was the answer to the question with the triangle in the rectangle with as and ls and ln???????

and the function question with a and A^-1 what was A^-1

and also the summation problem with the E

January 28, 2009 am31 7:53 am 7:53 am

A math teacher told me that few days before the test because, I said the same thing you said.

January 28, 2009 am31 7:53 am 7:53 am

I’m starting Pre-Calculus next week. But the 1st thing my math teacher said he will next teach is logarithmic regression lol. Seriously. I confused rotation 270 with rotation 90 because of the clockwise/counter-clockwise issue, how many points will I lose?
So far max I got is a 94/100 because of that logarithmic regression.

January 28, 2009 am31 7:54 am 7:54 am

Probably you’ll loose a maximum of two points.

January 28, 2009 am31 7:55 am 7:55 am

Oh yeah Cherryblossom you’re right I tested it out and it doesn’t matter it’s just the answer you got at the end. Did we have to state the coordinates?(I did just in case) And did we have to have 2 triangles on our graph or 3? (I did 2 )

January 28, 2009 am31 7:58 am 7:58 am

For person 125, if it’s a 4 point like I think it is, you will probably get 2 points but if you look at scoring keys on other test, you can still get points if you don’t have the complete correct answer you can possibly still get 3 out of 4 points.

January 28, 2009 am31 7:58 am 7:58 am

Two triangles because it triangle ABC and triangle A’B’C’

January 28, 2009 am31 8:01 am 8:01 am

well on the paper you had to state the coordinates for A” B” C” and the you had to draw 2 triangles ( the original one and the dilated one after the rotation)

and the function one
only A was a function =)

January 28, 2009 am31 8:01 am 8:01 am

ALso for person 125, you don’t subtract the 6 points that you got off in the logarithmic regression from 100 you subtract it from 88 which is what the test is out of. And if you tried, you can get at least 1 point. And also, if you do 82/88 to get your score, your score out of 100 will most likely be more because it is a scaled score. You can look on the regents site to see the scaled scores of previous tests.

January 28, 2009 am31 8:04 am 8:04 am

From seeing what people wrote on here, I’m saying I got maybe a 89 just as a guess. but an 89 is alright with me. I really want to know my score like.. now!!

January 28, 2009 am31 8:08 am 8:08 am

Since I rotated wrong, the graph is wrong. The graph was the main part of the question, so I will get half-credit.

January 28, 2009 am31 8:08 am 8:08 am

can some one amswer 123?

January 28, 2009 am31 8:09 am 8:09 am

did u have to first dialate or rotate?

January 28, 2009 am31 8:09 am 8:09 am

did you guys get 0 as an answer for the question with sigma notation
( a sign similar to E and then sin ( n(pi)/2)
and n=3 (maximum) and n = 1 (minimum)

January 28, 2009 am31 8:10 am 8:10 am

i think i got zero but i wasnt sure how to do it

January 28, 2009 am31 8:11 am 8:11 am

for pie did u have to plug in 180 or 3.14?

January 28, 2009 am31 8:13 am 8:13 am

I wrote on my paper “Error:Domain, no logarithmic equation fits this set of data.” I put it into logistic and i got error domain. I don’t think that deserves any credit lol.

140. January 28, 2009 am31 8:13 am 8:13 am

ya 0 for sigma question
sin of pi is 0 +
sin of 3pi/2 is -1 +
sin of pi/2 is 1

0+1-1 = 0

January 28, 2009 am31 8:21 am 8:21 am

was i the only one to learn this logarithm regression because i putit in stat/edit the data/then stat calc/ and the one that says linreg or something than you get the equation and when you plug in the second and third parts to this you get pretty close to what it should be. im not sure though because im not good at math b

January 28, 2009 am31 8:26 am 8:26 am

For the pi one, you don’t wirte 3.14 number 1, it will give you a wrong value to what you are looking for and 2 they mean 180. So you can turnn your calculator to radian mode and do it like that or just convert the piradians to degrees.

January 28, 2009 am31 8:31 am 8:31 am

yea i took it this morning.. i have to say the test wasnt hard but not as easy as others say. on the 41.4 for the angle one.. i got 4 thousand and something for the hard logistic reggresion one.. i got 30 for the area of the parallelogram one.. -2 for the first part 2.. i put 0 for the one we has to use sin[1{180}\2) and so on but im not sure because i think it could have been 2.. do you remmember any answers…

January 28, 2009 am31 8:32 am 8:32 am

for the sin 1 180 2 it was 0. and 41.4 for the angle.

January 28, 2009 am31 8:35 am 8:35 am

#20, was 1. I can’t explain because I don’t remember the diagram. The two traingles are similiar, meaning they’re proportional.
The height of Triangle 1 over the base of the Triangle 1 is equal to Triangle 2 height over Triangle 2 base. The base of Triangle 1 and the height of Triangle 2 is the same so its h1/b1=b1/b2.

January 28, 2009 am31 8:37 am 8:37 am

Sin pi/2 + Sin 2pi/2 + Sin 3pi/2
Sin 90 + Sin 180 + Sin 270
1 + 0 + -1
0

January 28, 2009 am31 9:18 am 9:18 am

Oops, #20 was 2, my bad. I remember writing 1 on the answer sheet and then crossing it out and putting 2.

January 28, 2009 am31 9:35 am 9:35 am

#6 was easy just put those 2 equations in your calculator and see the translation, and it was (0,2)

January 28, 2009 am31 9:37 am 9:37 am

ok heres my questions
11. arc sin -suare root 2/2?…i got wrong…just suddenly forgot how to do it
19. sum of roots -3 product of roots -9?…dk why i couldnt get the answer
for other questions
24. parralleogram…30…used law of sines
30.?? the x^2+y^2=25 and xy=12…4 intersections…which i only got 2 answers…cause i forgot to draw the other half of the circle
33. log regressiong…totally dk how it works…i wrote the model y=13.0134-7.3135x…is that right? my answers are wrong though
btw im 11th grade…my school has annulization…which i hate it…so next semester i will still takie precal…im gonna learn conics…darn it math

January 28, 2009 am31 9:51 am 9:51 am

The last part of the log reg question was the hardest thing on the whole test. The one where it gave you the wind speed and you had to solve for wind chill. I know the equation was like wind chill(y)=#+(ln)wind speed(x). when i plugged in all the numbers in for the last question and solved, I ended up with ln(x=1.77…. and from there i guess and checked til i got 6 degrees. im hoping for some credit. anyone else get 6 btw?

January 28, 2009 am31 9:57 am 9:57 am

6. the answer is (1). put the equation into your calculator and trace it you get x^2-1 (0,-1) and x^2+1 (0,1). for y -1 to 1 is 2, x doesnt move. so its T-0,2

January 28, 2009 am31 10:04 am 10:04 am

how in the world did people get 4 intersections for the graph?! I drew the circle and the 2 hyperbolas (is that wrong?) and the circle and got (-4,-3) and (4,3)

January 28, 2009 am31 10:09 am 10:09 am

oops ^ just one circle i drew.

January 28, 2009 am31 10:51 am 10:51 am

what angle question is everyone talking about that the answer is 41.1?????????????

January 28, 2009 pm31 3:48 pm 3:48 pm

Post – 155 – The question where they gave you three sides and you had to find angle A. Law of cosines.
Post – 153 – There were infact 4 points of intersection. I remember doing the same problem back in November on my test. They were (3,4) (4,3) (-3,-4) (-4, -3)
Post – 150 – Your answers are correct. For the natural log, you had to do e^1.77 or whatever is was after you divided and got ln x by itself.

January 28, 2009 pm31 5:24 pm 5:24 pm

yea there were four points. my graph sucked but i just used the distance formula to find that they were all 5 away from the origin.
the logarithmic question was bullshit that was never taught, and i messed up on te parallelogram. other than that it was pretty easy

January 28, 2009 pm31 6:21 pm 6:21 pm

I scored an 88 on it, and I’m not sure, but I think it was the logarithmic regression problem that screwed me over from getting a 100 (and probably one little mishap from the proof, as well). Many of us would have not panicked or anything upon first glance at the question if the guys over at Texas Instruments would have instead put “LogReg” in the list of different types of regressions in the STAT, rather than “LnReg”. Overall, I thought it was easy, and kudos to the guys upstate for surprising us with the log regression problem, although like everyone else, I can’t help but to feel a bit ticked off.

And 13 was one of the easiest problems… should have taken AT MOST 30 seconds to do.

January 28, 2009 pm31 6:24 pm 6:24 pm

i done understand question 20 was the answer 1 or 2

January 28, 2009 pm31 7:22 pm 7:22 pm

^^ i put 1 , but im not sure if it is one..

January 28, 2009 pm31 7:27 pm 7:27 pm

for question #20 the answer was 1. it was a mean proportional problem

January 28, 2009 pm31 7:49 pm 7:49 pm

Alright so for that stupid Log question that we all hated….

I assume everyone got a domain error with everything they tried. But I stayed and played around with the stupid thing. I took the table and switched X and Y, then found the exponential regression (since they are inverse functions, no?) after deriving that formula, I found the Log formula from the exponential. Im not even sure if this was even close to being correct, but it was the best I could come up with. Anyways, here is to hoping we all get the grades we so dearly want and deserve! *cheers*

January 28, 2009 pm31 8:03 pm 8:03 pm

hey for the logarithimic regression it was -16 because the answer came out to be -15.59 and they told us to round. and i got 6 too.

January 28, 2009 pm31 8:04 pm 8:04 pm

i put 30 for the parallelogram. how many points do we get taken off for not putting units?

January 28, 2009 pm31 9:13 pm 9:13 pm

January 28, 2009 pm31 9:33 pm 9:33 pm

As a NYC teacher, #33 was completely unfair for the students. It is not covered in our curriculum. Hopefully the state will clear this all up.

January 28, 2009 pm31 9:45 pm 9:45 pm

i think number 33 was the best it was the easiest 6 points i can gettt
you write the equation
the after replacing x and rounding it off you get -16
and when the temp is 0 the wind is 6

January 28, 2009 pm31 9:47 pm 9:47 pm

did anyone find the test online,
that is all that every one needs to know, who cares what people put, where can we find the answer key, and don’t say jmap.org, every one knows that, and it only has the conversion chartt for now,.
SO if you know another place please share it

January 28, 2009 pm31 9:50 pm 9:50 pm

January 29, 2009 am31 12:06 am 12:06 am

I am also looking for the test online.
I want to see some of the answers.

January 29, 2009 am31 12:24 am 12:24 am

i checked everywhere but couldnt find the test online. hopefully they will have the test online by 2morrow

January 29, 2009 am31 1:47 am 1:47 am

i got a 79 im glad i passed good luck to all

January 29, 2009 am31 2:21 am 2:21 am

To Chris, during the test I had the idea of getting the exponential regression and then just turning it into log form. Unfortunately, ExpReg is also Error Domain.

January 29, 2009 am31 2:24 am 2:24 am

lmao dudes you are all freaking out?.., that was like one of the easiest mathb regents ever… besides june 2008 which i took as a practice

January 29, 2009 am31 2:58 am 2:58 am

tht test was death

January 29, 2009 am31 3:25 am 3:25 am

theres a simply solution to question # 13
my teacher thought me this:
whenever u see the word inversly,
multiply the first two numbers and then divide by the third

the answer was 256 i think

January 29, 2009 am31 3:25 am 3:25 am

There’s the test WITH answers… just scroll all the way down to the bottom, and see for yourselves how you did.

January 29, 2009 am31 4:08 am 4:08 am

to post 177
hope steven from jmap writes out steps to those problems soon
i <3 jmap its always the fastest website to post up the answers

January 29, 2009 am31 4:31 am 4:31 am

Yes!!
I either got a 100 or a 99 depending how they graded my proof.
Hopefully 100. :)

January 29, 2009 am31 5:13 am 5:13 am

i got a 96%, i don’t think it was that hard.

January 29, 2009 am31 5:19 am 5:19 am

I’m fairly sure I got a 92 or 93 which makes me incredibly excited!!!

January 29, 2009 am31 6:19 am 6:19 am

what’s with all of you and the log thing? all you had to do was do ln regression which is natural log. and it was in my curriculum. as for the proof well there goes my chance at 100

January 29, 2009 am31 7:00 am 7:00 am

that logarithmic regression equation was something i’ve never even heard of; however, the proof was a joke. it was just ridiculously easy. the logarithmic regression on the other hand, i used lnregression first and when you plugged in the 50 it didn’t give you answer that would make sense.

January 29, 2009 am31 7:43 am 7:43 am

my teacher just called me..i got a 100!!!!!

January 29, 2009 am31 8:17 am 8:17 am

Logarithmic Regression the proof the standard deviation all confusing man this sucked

January 29, 2009 am31 8:55 am 8:55 am

i hate proofs

January 29, 2009 am31 9:04 am 9:04 am

damm i got like 23 points off cuz of da stupid MC, ahh well i hope i get atleast an 80 than.

January 29, 2009 am31 10:25 am 10:25 am

after looking at the answers online i think i faileddddddddd

January 29, 2009 pm31 8:28 pm 8:28 pm

where did u find the answers online ?

January 29, 2009 pm31 11:29 pm 11:29 pm

ugh, so many careless mistakes :/
#33 was the hardest, i was stuck on that one.
I hope to get an 80 or above. :/ i tried my best.
math is my weakest subject.

January 30, 2009 am31 12:07 am 12:07 am

Got a 93, would’ve got a 98 if it wasn’t for the log regression.

January 30, 2009 am31 1:01 am 1:01 am

Got a 99.
Gay proof. :(

January 30, 2009 am31 2:34 am 2:34 am

I got an 91, I went to my school the next day and my teacher told me.
I’m going to retake it in June for a better score.

January 30, 2009 am31 6:02 am 6:02 am

I just noticed how easy the proof was if I would of actually read that in the given, they wrote that the two angels are congruent. zz.

January 30, 2009 am31 7:32 am 7:32 am

damnn yoo i want to get a 80, i mite have to retake this than :(.

January 30, 2009 am31 9:20 am 9:20 am

Responding to: Anonymous – January 29, 2009 am31 2:21 am

I switched the X and Y table then found the Exp. equation, there wasnt a domain error then. But anyways, if anyone is curious, 81. I am pleased. Any chance of them scrapping the notorious 33? I asked my teacher during my chem regents and she said there was a possibility. Therefore, my score falls somewhere in between 81-87. Anything over an 81 is icing on the cake. However, as someone who is re-taking this class, I think that number 33 was an outrage. Nobody in our math department had covered the material, and only those kids that had knowledge of pre-calc and came back to retake even had a chance of getting it. (there was only one of those kids) So for that kid who scored a 64, I think it is incredibly horrifying since in fact, we should have gotten a fair question in which we actually had a chance of getting all six points. Would any sort of regression with questions base off the equation found be considered a six pointer? Oh New York State, what are we going to do with you?
=S

January 31, 2009 am31 12:00 am 12:00 am

I got an 81. It that bad? :(

January 31, 2009 am31 3:41 am 3:41 am

Oh my goodness.
For the log regression I had typed it in as such,
“L1, L2 LN”,
which always worked for the other equations, but not this one.
:[
Kept getting error.
Couldn’t graph the
xy=12 on the one problem.
And made some careless mistakes at other points.
I just want to pass, over a 75, I’ll be superbly pleased!
Waiting for my math teacher to email me my grade.
… I’m anxious.

January 31, 2009 am31 3:41 am 3:41 am

why are people complaining about there scores in the 90s or even 80s?

January 31, 2009 am31 4:11 am 4:11 am

Well, like I said before, I just dont think the six pointer was fair. Im ok with an 81, but for me its not like thats a fantastic score. For some that is a great score. So I guess its just a matter of opinion.

January 31, 2009 am31 8:59 am 8:59 am

dudes i got a 100 so suck it

February 1, 2009 am28 1:42 am 1:42 am

Chris if you think that 81 is a bad score than it is….in ya head but for others who arent over achievers which can be a bad thing it is good

February 1, 2009 am28 10:27 am 10:27 am

wow according to my own grading and memory i think i got a raw score of 48 which is a 64. this really sucks

• February 1, 2009 pm28 9:19 pm 9:19 pm

If it was that close, the State requires your school to regrade it, and often there is a marginal point that can be added. That’s if you really did get to at least 60. Good luck!

February 5, 2009 am28 4:03 am 4:03 am

I REALLY THINK THAT THE LOG REGRESION WAS HARD. MY TEACHER NEVER TEACHED ME THAT! I WAS HOPING THAT I WAS GOING TO PASS..
BUT I FAILED THE TEST.. IT WAS HARD =(

February 5, 2009 am28 4:08 am 4:08 am

Um… Narci, its taught not teached. No wonder you failed…

205. February 6, 2009 am28 5:58 am 5:58 am

13) Carol notice that the number of customers who visit her coffee shop varies inversely with the average daily temperature. Yesterday, the average temperature was 40deg. and she had 160 customers. If today’s average temperature is 25deg., how many customers should she expect?
this is not a complicate question, i think i was right but i don’t..ohk lets tell you how did i do it….
yesterday avrg. was 40deg nd she had 60 customers so we have to do 160/40= 4….so we can say that if temp is 1deg. then there will be 4 costumers.
Now think that if we multiply 4*25=100…
so it’s answer is she should expect 100 customers

6) it was so difficult for me because i forgot how to do it….so i think i got this wrong:(

206. February 6, 2009 am28 6:00 am 6:00 am

ohh guys i got onli 73 in regent…it was sucks

February 7, 2009 pm28 3:55 pm 3:55 pm

I though that the test was fair the log regression scared me, and like an idiot I put in logistic instead of natural log. When that didn’t work out i just solved for X using the exponential regression and then convert it into a logarithmic expression. The only other hard one in my opinion was the parallelogram. Though I don’t know how but I got a 92 on the damn thing

March 6, 2009 am31 7:01 am 7:01 am

whats wrong with the inverse variation one??

• March 6, 2009 am31 8:13 am 8:13 am

It’s a lousy model.

When the temperature gets near 0, sales get huge. At 0? Undefined? Below zero?

June 23, 2009 am30 1:40 am 1:40 am

well im taking the math B in about 11 hours still studying because my teacher sucks and im going over this math b from january and I’m FUCKING BEYOND LOST.! soo did anyone pass..?

June 23, 2009 pm30 3:16 pm 3:16 pm

MATH ANSWERS WILL BE POSTED AT 4:15 PM!!!!!
THAT IS WHEN THE REGENTS ENDS FOR THE ENTIRE NEW YORK STATE

January 22, 2010 pm31 6:33 pm 6:33 pm

I got a 32 on the regents.

February 20, 2010 pm28 6:16 pm 6:16 pm

hey im a ninth grader and I have math B, the reason is because im excellent in math, but im taking the regents in june 2010. My math b teacher sed that the jan 2010 was really easy so do u think they are going to make the math b june 2010 regents reaLLY EASY OR REALLY HARD . . . . also nxt yr i might have the choice between going to precalculus or skipping to AP Calculus as a sophomore which do u think i should do?

• February 20, 2010 pm28 6:57 pm 6:57 pm

In theory there is no difference in difficulty between January and June.

As far as what course next, I wish the school districts would opt for slower, deeper sequences, but that is advice to the district, not to you.

You should consult with your teacher, counselor and parents, and make the normal choice for someone of your ability in your district.

February 20, 2010 pm28 9:42 pm 9:42 pm

Ok, thank you. One more thing though. I only understand half of the math b topics. Wat advice do you offer so I could get a 90 or above on the regents like wat sites and books and study tools?