E denotes enlargement about the centre (-1, 0) with a scale factor of 2 and R denotes the rotation about the origin through - 90°. Find the combined transformation EoR. Find the image of a APQR having the vertices P(3, 1), Q(1, 3) and R(2, -1) under the combined transformation EoR. Also draw both figures APQR and its image on the same graph paper. Ans: P(x, y) → P(-2y-3, 2x); P"(-5, 6), Q"(- 9, 2), R"(- 1, 4)​