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3.2: Relations and Functions

Difficulty Level: Advanced Created by: CK-12
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Vocabulary

Function

A function is a relation where there is only one output for every input. In other words, for every value of x, there is only one value for y.

Relation

A relation is any set of ordered pairs (x, y). A relation can have more than one output for a given input.

Vertical Line Test

The vertical line test says that if a vertical line drawn anywhere through the graph of a relation intersects the relation in more than one location, then the relation is not a function.

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Difficulty Level:
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Date Created:
Jan 16, 2013
Last Modified:
Aug 16, 2016
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MAT.ALG.431.L.2