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4 March, 02:23

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. 4 March, 02:40
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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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