Let T be a linear transformation from R2 to R2 defined by T(x, y) = (2x - y, x + y). a) Find the matrix of T with respect to the bases B = {(1, 1), (2,1)} and B = {(-1,2), (1,1)}. (4 marks) (4 marks) b) Use the matrix found in part a) to find T(v), where v = (2, 3).