The dashed triangle is the image of the solid triangle. The center of dilation is (−5, 7). What is the scale factor used to create the dilation? Enter your answer as an integer or decimal in the box. Two triangles on a coordinate plane. A triangle with three solid segments has vertices at negative 5 comma 7, 7 comma 7, and negative 5 comma negative 1. A triangle with three dashed segments has vertices at negative 5 comma 7, negative 8 comma 7, and negative 5 comma 9.