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, point B', has the coordinates (2, –3). What is the scale factor of the dilation?
110110

1515

5

10

Answer 1

Well I believe that the answer is five. Simply because 10 divided by 5 is 2 and -15 divided by 5 is -3