Question

Sophia is dilating a figure. one of her pre-image points with coordinates (-3, 5) has an image with coordinates (-9, 15). If one of the other image points has coordinates (3, 1), what are the coordinates of its pre-image point?

A. (9, 3)
B. (1, 1/3)
C. (1,3)
D. (-3,-1)

Answer 1

(9,3) I believe. Because to get from -3 to -9 you multiply by three, as well as 5 to 15. So you simply multiply multiply these coordinates by three.