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Mathematics 9 Online
OpenStudy (anonymous):

Is {(–2, 0), (–1, 3), (0, –2), (3, –1)} a function?

mathslover (mathslover):

yes it is

OpenStudy (anonymous):

No sorry disagree: the definition of a function is that it has one output for any input. if you draw this on a graph then it look like a parabola slightly on its side. so there are 2 values for x in many places.

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