Question

ematics 8B - Underberg Engli 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?

Answer 1

B(10, -15) --> B'(2, -3)

We can see that the coordinates of the point B were divided by 5 to find the coordinates of the point B'. So, the scale factor of the dilation would be 1/5.