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This free Vertical Line Test step-by-step guide will teach you how to figure out whether or not a relation is or is not a function by looking at its graph and using a simple mathematical tool called the vertical line test.
The vertical line cuts the graph of a function at only one point, and hence it has only one y value(codomain) for the x value(domain). Let us learn more about graphing a vertical line test, and how to apply the vertical line test, with the help of examples, FAQs.
Learn about the Vertical Line Test and how it can be used to determine whether a given relation is a function or not. Find out why this method supports the definition of a function.
In mathematics, 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.
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.
How To: Given a graph, use the vertical line test to determine if the graph represents a function. Inspect the graph to see if any vertical line drawn would intersect the curve more than once. If there is any such line, determine that the graph does not represent a function.
The vertical line test for math functions. How to determine if a relation is a function by using the vertical lien test.
Functions: Vertical Line Test for Functions. The Vertical Line Test is a test to determine if a relation or its graph is a function or not. For a relation or graph to be a function, it can have at most a single y-value for each x-value.
What is the Vertical Line Test? All functions are equations, but not all equations are functions. Functions are equations that pass the Vertical Line Test. In other words, in order for a graph to be a function, no perfectly vertical line can cross its graph more than once.
Definition. The vertical line test is a visual method used to determine if a curve is a graph of a function. If any vertical line drawn through the graph intersects it at more than one point, then the relation represented by the graph is not a function.