Find the 3x3 matrices that represent the following transformation of 2D space:
a) A rotation of -90 degrees about the origin followed by a translation of (3, -4)
b) A translations of (3, -4) followed by a rotaion of -90 about the origin
c) A rotation of -90 degrees abt the point (3, -4)
b) Find the image of A(1,2) under the transformation (a), (b) and (c) respectively.