Vertical Line Test: Definition and Examples

The vertical line test is a graphical method of determining whether a curve in the plane represents the graph of a function by visually examining the number of intersections of the curve with vertical lines . The motivation for

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The Vertical Line Test

The vertical Line test. is a way to determine if a relation is a function . states that if a vertical line intersects the graph of the relation more than once, then the relation is a NOT a function . If you think about it, the vertical line test is simply