<p>what was the answer to the inverse (5,0) one</p>
<p>lol it seems that i shouldve taken the December test instead of the November one :-(</p>
<p>@jimjones: if (0,5) is on f, then (5,0) is on f-1</p>
<p>Anyone find the consolidated answers for the November SATMath II 2008 ,since its the same</p>
<p><a href=“http://talk.collegeconfidential.com/sat-subject-tests-preparation/590461-november-2008-sat-subject-test-math-level-2-a-5.html[/url]”>http://talk.collegeconfidential.com/sat-subject-tests-preparation/590461-november-2008-sat-subject-test-math-level-2-a-5.html</a></p>
<p>i thought the beginning coords were (5,0) not (0,5)</p>
<p>Wait so you disregarded “b” to find “a” in so confused man I’m retaking this in January I literally blanked out and I don’t know why</p>
<p>@jimjones: if they were (5,0), then the answer would be (0,5). You just switch the x and y coordinates.</p>
<p>@Jleu: Since it’s true for all x, you set the coefficients for x^2 on the left equal to the ones on the right. You do the same for the coefficients of x on the two sides and for the constants on the two sides. It’s like the problems with imaginary numbers. If a+(b+1)i=3+4i, then a=3 and b+1=4.</p>
<p>if they were (5,0) shouldnt it be (-5,0)?
i said up hypothetical equation: y=x-5
switcched the signs, x=y-5
y=x+5
(-5,0)?</p>
<p>Collegeboard reused an entire freaking test? That sounds like it would be problematic.</p>
<p>@ jimjones3000</p>
<p>from memory I know that if the point (x,y) lies of function f, then point (y,x) lies on the inverse of f</p>
<p>I am really scared because I don’t remember some of the answers you guys are getting in this thread.</p>
<p>@jimjones: No. you switch the x and the y, like you do when you’re finding the inverse–like you did to get x=y-5. In your example, the x-intercept of the inverse is indeed (-5,0), but that’s not what the question asked. It asked what point was sure to be on the inverse. If you’re given a point on a function, the inverse is sure to have the point with the x- and y-coordinates switched on it. In fact, your inverse does have the point (0,5) on it.</p>
<p>how could (0,5) work and not (-5,0) though
@poster, what do u need help</p>
<p>Here you go:</p>
<p>Here is a consolidated list of the thread</p>
<p>Note: * denotes “DISPUTED” or unsolved/disputed throughout the thread. Bolded in disputed answer means the more supported answer of the two.
? denotes “w/o support”, not discussed at length and was supported by only 1 person</p>
<p>IN NO PARTICULAR ORDER: </p>
<p>arithmetic series of third term & seventh term, 6th term 23, 2nd term 7: 11 (D)</p>
<p>x^2+2x+4=(x+2)^2+a(x+2)+b,find a: answer: -2</p>
<p>?f(f(x)) = -x </p>
<p>? ln (#) = ? ?</p>
<p>? Donuts problem: as the dollar amount,p, increased, d decreased by -26.97 </p>
<p>? Babysitting: (32.5-2x)/3.5</p>
<p>? 2x+4 or something like that for -1000 function question: ?</p>
<p>what is g(x) graph in terms of f(x): |f(-x)|</p>
<p>Ratio of sphere w/ r and sphere w/ 2r: 1:8</p>
<p>Sum of zeros, find recip 1/x + 1/y: answer: 0.5 (1/2)</p>
<p>f(1) = -2, f(-1) = 3, find f(4): answer eq y=-2.75x -0.25: answer 11.25 (-?)</p>
<p>Polar equation graph with circle and angle 3rd quadrant, eq of circle x^2+y^2 =5: 206.6</p>
<p>n! divisible by 9 if and only if n >- 6 (greater or equal t</p>
<p>*(x^2-25/x^2-5x) undefined at x value: x=5, or x=5,0 (does 0/0 make it undefined)?</p>
<p>equi lat triangle P=6: 1, -rt 3</p>
<p>y>2x^2-1: (1,2)</p>
<p>*Period of |sin x|: answer 2pi or pi</p>
<p>csc x & tan x problem in pi/2 <theta< pi = -.57</p>
<p>Max on [-2,4] of function: -2</p>
<p>Donuts prob: d=-24.37p+273.
For every $1 increase in p, d decreases by 24.37.</p>
<p>Sum of positive integers 1+2+3+4…225: 113 (<a href=“http://talk.collegeconfidential.com/...1-post128.html[/url]”>http://talk.collegeconfidential.com/...1-post128.html</a>)</p>
<p>cos f(x) = sin x: pi/2 - theta (cofunc ident)</p>
<p>*Rotation around XY of tri to cone: 1500 pi or 2000 pi</p>
<p>Sum of inf geometric sequence 1/(5)^x = 2.25 (2 1/4 on test)</p>
<p>f(x+2) graph shift left: y-inter (0,4)</p>
<p>Similiar triangles sin A/sin B : 3</p>
<p>*Boxplot graph, I - greater means A>b, II - standard dev, III - range: either I only or I & III</p>
<p>(x-3)^2 + y^2 =11. (x+2)^2 + y^2 = r^2.: answer: 1.68 rounds to 1.7</p>
<p>find NON-NEG productive of zeros: answer: Non Negative product of zeros is x(x+6) b/c 0 times -6 is 0, which is a Non Negative number.</p>
<p>probability question about numbers whose sum is 10 and product is 20: 1/2 (ab=20 and a+b)</p>
<ol>
<li><p>Probability -1<x<1: pi/4</p></li>
<li><p>Parallelogram question: 53</p></li>
</ol>
<p>@jimjones: what you said works for lines, but the problem didn’t specify the function was a line. For example, if y= (x+1)^3-2, then the inverse is y=(x+2)^(1/3)-1. Their x-intercepts aren’t opposites, but completely different numbers. The inverse has x-int (-1,0), but the original doesn’t have x-int (1,0). If you plug in a 1 you get 6, so there’s a point (1,6), not (1,0).</p>
<p>@HabeshaGuy, now that’s a useful post! Great job! (although a couple of my answers are wrong, according to you lol)</p>
<p>For the polar equation one I got the value of 221 degrees. IS that incorrect? ALso, what is the answer to the babysitter question? I guessed and out down E…</p>
<p>According to other people’s answers, the general consensus is telling me that I got a 760. Not bad.</p>
<p>I got Max on [-2,4] of function as 4 and not -2
Rotation around XY of tri to cone, I think I got 1500 pi</p>
<p>Was this test harder than the last one you guys took? I hope the curve is nice to me…</p>