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Which of the sets of ordered pairs represents a function?

A = {(2, −2), (5, −5), (−2, 2), (−5, 5)}
B = {(4, 2), (4, −2), (9, 3), (9, −3)}

1 Answer

6 votes
The answer is (A).
The domain can not repeat itself.
User Andrew Stein
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