An Image he's point W'(7-3), and the pre-image has point W(21,-9). What scale factor was used to dilate the pre-image? os
03
09

I'll do the first one for you. it isn't very hard at all.on number one, you have (50 × 3), which equals 150, and (3 × 3), which equals 9. after you establish that, you add 150 and 9 together. so, (150 + 9) equals 159.this means that 53 × 3 = 159.