Help with an SAT Math Problem

Test Preparation SAT Preparation
1

<p>I don't know how to solve this problem. Could anyone help me out with it and explain how to solve it?</p>

<p>Thank you very much.</p>

<p>

<a href="http://i83.photobucket.com/albums/j283/ta_lia/sat.jpg%5B/IMG%5D"&gt;http://i83.photobucket.com/albums/j283/ta_lia/sat.jpg

</a></p>

2

<p>sorry, but an additional problem that I don’t know how to solve is:</p>

<p><a href=“http://i83.■■■■■■■■■■■■■■■/albums/j283/ta_lia/sat-1.jpg[/url]”>http://i83.■■■■■■■■■■■■■■■/albums/j283/ta_lia/sat-1.jpg&lt;/a&gt;&lt;/p&gt;

3

<p>for the first one i think it should be (b) because its the absolute value graph, and |-x| always = |x|</p>

4

<p>I think the second one is “(a) a/6” since x≥(a/6)-0.5 the answer can only be=(a/6)-0.5 or >(a/6)-0.5 … (a) is the only choice > than the expression while other answer choices are <(a/6)-0.5</p>

5

<p>^ thats what i thought too
did you try plugging in numbers?</p>

6

<p>Na, i noticed that in spite of whatever the value of a/6 is the value of the expression is only going to get smaller if you subtract a positive constant from it. I’m not sure about my answer though.</p>

7

<p>actually yeah you’re right because if x = a/6
then 6x + 3 >> 6(a/6) + 3 >> a + 3 is always greater than a
=)</p>

8

<p>Wouldn’t the answer to the first one be A because f(0) = 0 (according to the graph, unless it is drawn incorrectly) then f(0) + f(a) = f(a). </p>

<p>Selena, the graph drawn doesn’t appear to be a absolute value graph, so that rules out choice B.</p>

9

<p>1.) is (A) as mentioned</p>

<p>2.) x>=(a-3)/6
x>=a/6-1/2
that’s also (A), since all the other choices are less than a/6-1/2.</p>

10

<p>ohh i see what you’re saying
yeah it was hard to tell =)</p>