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Algebra 8 Online
OpenStudy (anonymous):

Which relation is a function? {(3, 5), (5, 5), (1, 5), (7, 5), (9, 5)} {(-3, 4), (-5, 4), (-1, 4), (-3, 4), (9, 4)} {(-3, -5), (-5, -5), (-1, -5), (-7, -5), (-7, -5)} {(5, 3), (5, 5), (5, 1), (5, 7), (5, 9)}

OpenStudy (anonymous):

This is really easy. Which one doesn't repeat the x-values?

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