Question

A triangle with vertices at A(20, –30), B(10, –15), and C(5, –20) has been dilated with a center of dilation at the origin. The image of B, has the coordinates (2, –3). What is the scale factor of the dilation?

1/10
1/5
5
10

Answer 1

5

Explanation:

Answer 2

The correct answer is 5.

Explanation:

This is because if you divide 10 by 2 and -15 by 3

you get 5. Now to double check, you can do 10/5 and -15/5

This will give you 2, -3, which is the coordinates.

Hope this helps!