# Relations and Functions

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Information about Relations and Functions
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Published on March 14, 2014

Author: directtorahul

Source: authorstream.com

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### Relations and functions | Recognizing functions | Khan Academy

Learn to determine if a relation given by a set of ordered pairs is a function.

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The relations shown above are NOT functions because certain x-elements are paired with more than one unique y-element.

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### Determining Relations and Functions - regentsprep.org

Traditionally, functions are referred to by the notation f (x), which is read "f of x" or "f as a function of x".