A triangle ABC with points A(0, 0), B(1, 1), C(5, 2) needs to be translated and scaled to twice its size. This transformation can be expressed as a composite transformation. Describe and write the matrices for these component transformations. Derive the 3 x 3 homogeneous matrix that achieves this transformation: tx = -5, ty = -2, sx = 2, sy = 2.