<p>When graphed in the standard (x,y) coordinate plane,
the lines x = 3 and y = x 3 intersect at what point?
A. ( 0, 0)
B. ( 0,3)
C. (3, 0)
D. (3,3)
E. (3,6)</p>
<p>it is B right? but it keep saying E? how is that?
can some one please help me.</p>
<p>thanks</p>
<p>Think again about the line described by x = -3. Is it a horizontal or a vertical line? Now, go back to the problem and re-work it.</p>
<p>I’m guessing you set them equal to each other? That isn’t going to work. You need to plug the x coordinate (in this case, the -3) into the other equation.<br>
x=-3
y=x-3 so substitute
y=-3-3
y=-6 and the x coordinate has to be -3 since x=-3 is a completely vertical line, so the answer is E
It makes more sense if you visualize/draw the graph.</p>