Identify the set of ordered pairs that represents y as a function of x. {(0, 0), (1, 1), (1, 1), (3, 3)} {(−2, 0), (−1, 0), (1, 0), (2, 0)} {(0, −2), (0, −1), (0, 1), (0, 2)} {(1, 0), (1, 1), (2, 1), (2, 2)}