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?