# Determining domain and range: How anyone can learn

# Determining Domain and Range

There are many ways that we can represent a relation to determine if it is a function or not. Such examples we will explore are a set of points, mapping, equations, and graphs. In each case the definition of a function is the same. Every input value uniquely maps to exactly one out put value. Here are a couple of examples

## Determining If A Graph Represents A Function Or Not

## Determining If Mapping Represents A Function Or Not

## Determining If A Set Of Points Represents a Function Or Not

Once we have determined if our relation represents a function or not we can determine the domain and range of the functions. Remember the domain is the set of all input values that make up the function and Range is all of the output values that make up a function.