Question

Which scale factors produce an expansion under a dilation of the original image?

Select each correct answer.

A. 0.3
B. 0.75
C. 2
D. 3

Answer 1

C, D

Explanation:

An expansion would make a image bigger. The only way to do that is dilate the image by a scale bigger than 1. Both 2 and 3 are greater than 1.

Answer 2

C. 2 and D. 3

Explanation:

A value below 1 will result in a contraction of the original figure, while a value equal to 1 will result in the same image. Thus, we need a factor greater than 1. In this problem, option C and option D are greater than 1 being 2 and 3 respectively. Those are your answers.