Question

2. Consider this dilation.

Pre-image
9 cm
B
Image
3 cm B
(a) Find the scale factor. Show your work. (5 points)
(2- a.) Scale factor= Image length
Pre-image length

Answer 1

1/3.

Explanation:

The scale factor is the ratio of the image length to the pre-image length.

Scale factor = Image length / Pre-image length

In this case, the image length is 3 cm and the pre-image length is 9 cm.

Scale factor = 3 cm / 9 cm = 1/3