# Domain and Range
**Common Input/Output Names:**
| Input | Output |
|:-------------------- | ------------------:|
| Domain | Range |
| Independent Variable | Dependent Variable |
| X | Y |
There are several ways you can write out the domain or range of a function:
> [!info]+ Set-Builder Notation
> InSet-builder notation
> $\{x|1 < x < g\}$
> [!info]+ Interval Notation
> Set-builder notation
> $\{x|1 < x < g\}$
A ==**one-to-one function**== occurs when neither the x or y values are repeated at any point throughout the function.