Question

a triangle with vertices at a 20 -30 b 10 -15. and c 5 -20 has beem dilated with a center of dilation at the origin the image of b point b has coordinates 2 -3 what is the scale factor of the dilation​

Answer 1

1/5

Explanation:

When the dilation is centered at the origin, the dilation factor is applied to each pre-image coordinate to get the image coordinate.

k(10, -15) = (2, -3)

k = 2/10 = -3/-15 = 1/5

The scale factor of the dilation is 1/5.