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?
Step-by-step explanation: The scale factor is a ratio of the x- and y-coordinates in the image to the x- and y-coordinates in the preimage. Here, the scale factor is 0.4.
