The image of a triangle after it has been dilated with a center at the origin has vertices at (–12, 6), (6, –18), and. If the pre-image of , point a, has coordinates of (–18, 9) and the pre-image of , point c, has coordinates of (18, 12), which statements are true? check all that apply the coordinates of are (27, 18). The coordinates of are (12, 8). The scale factor is 1. 5. The scale factor is 0. 75. The scale factor is. The coordinates of b are (9, –27). The coordinates of b are (4, –12).