Question

Rectangle A’B’C’D is the imagine if rectangle ABCD after a dilation. The center of dilation is the orgin. What is the scale factor of the dilation?

Answer 1

D. 3

Explanation:

Look at rectangle ABCD. It's dimensions are 1 by 2 (1 unit high and 2 units long). Now look at rectangle A'B'C'D', the image. It's a rectangle that is 3 by 6.

The dimensions of the original rectangle have been multiplied by 3.