If you are dilating about the origin (0, 0), then all you have to do is multiply each coordinate by the scale factor k. So for A = (-5, 3), the image point A' would be:
A' = k·A = (-5·2, 3·2) = (-10, 6)
You can complete the other points. If you are dilating about a point other than the origin, then the answer's a bit more involved.