Given that M : (x, y) \(\to\) (7x, 3x - y) and N : (x, y) \(\to\) (2x - y; 5x + 3y) (a) write down matrices M and N of the linear transformation (b) find the image of P(2, -3) under the linear transformation N followed by M; (c) find the coordinates of the point Q whose image is Q(2, 4) under the linear transformation N