ΔRST is dilated about the origin, O, to create ΔR'S'T'. Point R is located at (3, 9), and point R' is located at (1.2, 3.6). Which scale factor was used to perform the dilation?
1.2/3 = 0.4
3.6/9 = 0.4
So it looks like the scale factor was 0.4.
