Mathematics, 14.07.2019 14:00 Bg88860709

Which of the sets of ordered pairs represents a function? a = {(−4, 5), (1, −1), (2, −2), (2, 3)} b = {(2, 2), (3, −2), (9, 3), (9, −3)} only a only b both a and b neither a nor b

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Which of the sets of ordered pairs represents a function? a = {(−4, 5), (1, −1), (2, −2), (2, 3)}...