triangle pqr is transformed to triangle p′q′r′. triangle pqr has vertices p(8, 0), q(6, 2), and r(−2, −4). triangle p′q′r′ has vertices p′(4, 0), q′(3, 1), and r′(−1, −2). 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.