Triangle PQR is transformed to similar triangle P'Q'R'.
A coordinate grid is shown from negative 10 to 0 to positive 10 on both x- and y-axes at increments of 1. A triangle PQR has P at ordered pair 4, negative 4, Q at 8, negative 4, R at 4 and negative 8. A polygon P prime Q prime R prime has P prime at ordered pair 2, negative 2, Q prime at ordered pair 4, negative 2, R prime at ordered pair 2, negative 4.
What is the scale factor of dilation?