# What is Domain and Range of a Function?

##### 1 Answer

Apr 7, 2018

First, let's define a function:

A **function** is a relationship between the **each #x#-value or input has only one #y#-value or output** .

**Domain**: all **x-values** or **inputs** that have an output of real

**Range**: the **y-values** or **outputs** of a function

For example,

For more information, feel free to go to these following links/resources:

https://www.intmath.com/functions-and-graphs/2a-domain-and-range.php