Question

What is the scale factor of this dilation?

A 2/3

B 1 1/2

C 3

D 5

Answer 1

B. 1 1/2

Explanation:

The post-image is clearly larger than the pre-image. The ratio of the post to the pre is 9 : 6 and 10 : 15, which are equal to 3 : 2, and equal to 1 1/2.