Polygon xyzw is dilated by a scale factor of 2 with point t as the center of dilation, resulting in the image x′y′z′w′. if point t lies on yz, what can be said about y'z' ?

Since the whole figure including all the points is enlarged at the same time, the dilated figure will still have the same slope and that includes the fact that point T is still in line Y'Z'. The slope or shape does not change, only the size alters.The center of dilation is still at Point T in this case.

put like terms together.orremember that the 45 becomes negative when moved to the other side.orthe minuses cancel out.

What do you mean by that?