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Is {(-3,0), (13,4), (6,3), (13,-4), (22,5)} a function? Please explain if possible
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Is {(-3,0), (13,4), (6,3), (13,-4), (22,5)} a function? Please explain if possible

User TrolleFar
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No this is not a function. A function is a set of inputs, x-values with a single output. Since 13 has two outputs, 4, and -4, this is not a function.
User Flacnut
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