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20-12-2017
Mathematics

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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)}

Respuesta :

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20-12-2017

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

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