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Which relation is a function? A. {(1, −1), (−2, 2), (−1,  2), (1, −2)} B. {(1, 4), (2, 3), (3,  2), (4, 1)} C. {(1, 2), (2, 3), (3,  2), (2, 1)} ​ D. {(4, 2), (3, 3), (2,  4), (3, 2)}
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2 votes
Which relation is a function?

A. {(1, −1), (−2, 2), (−1,  2), (1, −2)}

B. {(1, 4), (2, 3), (3,  2), (4, 1)}

C. {(1, 2), (2, 3), (3,  2), (2, 1)} ​

D. {(4, 2), (3, 3), (2,  4), (3, 2)}

User Sarek
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1 Answer

1 vote
The correct answer is B. The reason being is because none of the x-axis numbers repeated
User Lotfi
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