Question

What are the coordinates of the image of point B, after the segment has been dilated by a scale factor of 3 with a center of dilation at the origin?

A. (–9, 9)

B. (9, –9)

C. (–1, 1)

D. (1, –1)

Answer 1

A

Explanation:

Since the dilatation is centred at the origin, then each of the coordinates of B are multiplied by the scale factor of 3

B(- 3, 3 ) → B'( 3 × - 3, 3 × 3 ) → B'(- 9, 9 ) → A

Answer 2

(-9,9) is the correct answer