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4 December, 18:40

What isthe vertical line test

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  1. 4 December, 18:53
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    The vertical line test is a visual way to determine if a curve is a graph of a function or not.

    A function can only have one output, y, for each unique input, x. If a vertical line intersects a curve on an xy-plane more than once then for one value of x the curve has more than one value of y, and so, the curve does not represent a function.

    If all vertical lines intersect a curve at most once then the curve represents a function.
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