# What is the domain and range of #y=x^2#?

##### 1 Answer

Mar 26, 2015

This is an equation (and a function) whose graph we should know:

graph{x^2 [-20.19, 20.36, -2.03, 18.25]}

The domain is the set of all allowed **The domain is all real numbers** . **(The interval #(-oo, oo)#)**

The range is the set of all

It is not 100% certain from the graph, but every number that is NOT negative will be used as a **The range is #[0, oo)#**