Question

What is the vertical line test?​

Answer 1

A vertical line test is used to find out whether if a curve is a graph of a function or not. If you are able to draw a vertical line, and it intersects more than one point on the curve, then it is not a function.

Explanation:

Answer 2

Basically, in a function, you draw a vertical line. If that vertical line crosses the function more than once, then it is an invalid function.

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