Doug C. answered • 06/04/18

Math Tutor with Reputation to make difficult concepts understandable

Hi Jenna,

I assume the rest of the question went something like "what was the scale factor for this dilation"?

Do you see a number that you can multiply each coordinate of the first three points that maps to the coordinates of the 2nd three points?

For example (-1,3) -> (-4, 12). If you divide -4/-1 or 12/3 you get the scale factor (4). Confirm that the same multiplication maps the other two pre-image points to their respective images.