Question

Each of the options below show a point before and after that point was transformed by a dilation centered at the origin. Which of the points below was dilated by a scale factor of 3? Select all that apply. A) Before: (-1, 3), After:(-3, 9) B) Before: (2, 1), After: (5, 4) C) Before: (-2,-2), After: (-6, -6) D) Before: (6, 3), After: (2, 1)

Answer 1

Hence, the answer is A and C

1) Considering that after a dilation whose k is greater than 1 it enlarges the figure.

2) And the given data we can write for dilations centered at the origin:

Pre-image Image

(x, y) k(x, y)

3) Examining the options we can state

Pre-image Image

(x, y) 3(x, y)

A(-1,3) A'(-3,9)

C(-2,-2) C'(-6,6)

Hence, the answer is A and C