# Find the domain in #y=sqrt(4-x)#?

##### 1 Answer

Mar 19, 2018

**or**

#### Explanation:

Since this is a **square root**, the values inside **cannot be lesser that 0**. Else, you would end up with an imaginary number. So, with that information, we can write the inequality:

Solve for

Now, when we multiply both sides by a negative, we have to **switch the signs**:

We can also represent this as:

And there we have our answer.