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Mathematics 14 Online
OpenStudy (anonymous):

What change is needed to make this relation a function? {(1, 2), (2, 5), (3, 8), (3, 9)}

OpenStudy (chriss):

it's not a function because you have one x value mapping to two y values. (3,8) and (3,9) To change it to a function, you have to get rid of one of those points.

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