Point A is the pre-image of a vertex of a square and is located at (–10, 8). The square is dilated with the center of dilation at the origin. Point A’ is the image and is located at (–7.5, 6). What is the scale factor of the dilation?

Point A is the pre-image of a vertex of a square and is located at (–10, 8). The square is dilated with the center of dilation at the origin. Point A’ is the image and is located at (–7.5, 6). What is the scale factor of the dilation?

Question

Point A is the pre-image of a vertex of a square and is located at (–10, 8). The square is dilated with the center of dilation at the origin. Point A’ is the image and is located at (–7.5, 6). What is the scale factor of the dilation?

Vocaloid · Answer

if you are given coordinates you simply need to divide corresponding coordinates of the image/ coordinates of the pre-image

so either (6/8) or (7.5/10), when simplified, will give you the scale factor

please notify me if anything was unclear or if you just want to check your answer