5. Find the matrix that represents the given relation. Use elements in the order given to determine rows and columns of the matrix. [10 PtS-i a. R on {W, x, y, Z}, Where R = {(w, w). (w. x). (x. w). (x, x), (x, z), (y. y). (z. y). (z. 2)}. b. R on {1, 2, 4-, 8, 16}, where aRb means a S b