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12 February, 04:14

Explain why a graph that fails the vertical-line test does not represent a function. Be sure to use the definition of function in your answer.

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  1. 12 February, 05:41
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    If a vertical line intersects a graph more than once, then the graph has more than one y-value for a given x-value. You can't have two y-values for an x-value in a function. Therefore, the graph is not a function.
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