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Mathematics 20 Online
OpenStudy (anonymous):

Which relation is a function? a. {(5,3),(2,8),(-5,-1),(4,7),(3,1)} b. {(5,3),(2,8),(-5,-1),(4,7),(5,7)} c. {(-5,3),(2,8),(-5,-1),(4,7),(2,2)} d. {(5,3),(2,8),(-5,-1),(4,7),(2,1)}

OpenStudy (aroub):

a.

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