# Functions

Teacher's questions

### Functions

What is a function?
Math Tutor

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### Re: functions

A function is a relation between the set of inputs and the set of permissible outputs with the property that each input is related to exactly one output. An example is a function that relates each real number x to its square x2.

leesajohnson

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### Re: Functions

In mathematics, a function is a relation between a set of inputs and a set of permissible outputs with the property that each input is related to exactly one output. An example is the function that relates each real number x to its square x2

faithhill

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