Question

What is the scale factor in the dilation ?

1/6

1/3

3

6​

Answer 1

3.
2.5 x 3 = 7.5
Thus, it’s 3

Answer 2

3

Explanation:

1) Find two corresponding lengths between the image and the pre-image

Pre-image (bottom side) = 3 units

Image (bottom side) = 9 units

We can use any corresponding lengths for this step.

2) Divide the length of the side from the image by the length of the side from the pre-image

9 units ÷ 3 units

= 3

Therefore, the scale factor of the dilation is 3.

I hope this helps!