(04.01) If y = 5x - 4, which of the following sets represents possible inputs and outputs of the function, represented as ordered pairs? (4 points) 1) {{0,-4), (2, 6), (4, 20)} 2) {(0, -4), (2, 6), (4, 16)} 3) {(0, 4), (2, 6), (4, 16)} 4) {0, 4), (2,-6), (4, 20)}