<p>Number 17 on page 522 of the official study guide. Here's the problem...</p>
<p>In the xy-plane, line l passes through the origin and is perpendicular to the line 4x + y = k, where k is a constant. If the two lines intersect at the point (t,t+1), what is the value of t?</p>
<p>(A) -4/3
(B) -5/4
(C) 3/4
(D) 5/4
(E) 4/3</p>
<p>Any help would be much appreciated.</p>
<p>The slope of 4x + y = k is -4, right? The slope of l therefore must be 1/4. y = 1/4x;
t+1 = 1/4t, so t=-4/3, A.</p>
<p>Does anybody know if the answer to number 13 in Section 6 of Test 1 is incorrect? There seems to be an error in the book. Everyone who has looked at the book with me gets 4, but the listed answer is 3.</p>
<p>Oh, I see. That seems really simple when you put it that way. I guess that k constant crap confused me.</p>
<p>Number 13 is definetly 3. Here's why.</p>
<p>h(x) = g(2x) + 2</p>
<p>So h(1) = g(2) + 2</p>
<p>Looking at the graph you can see that g(2) = 1</p>
<p>1+2 = 3</p>
<p>I think the answer is 3. It's asking the value of h(1) right? So then plug in 1 for g(2x). so then g(2*1)=1 and then add 2 to that so 1+2=3. Am I making sense? lol</p>