Triangle pqr is transformed to triangle p′q′r′. triangle pqr has vertices p(4, 0), q(0, −4), and r(−8, −4). triangle p′q′r′ has vertices p′(1, 0), q′(0, −1), and r′(−2, −1). plot triangles pqr and p′q′r′ on your own coordinate grid. part a: what is the scale factor of the dilation that transforms triangle pqr to triangle p′q′r′? explain your answer. (4 points) part b: write the coordinates of triangle p′′q′′r′′ obtained after p′q′r′ is reflected about the y-axis. (4 points) part c: are the two triangles pqr and p′'q′'r′' congruent? explain your answer.