# How do you find the domain and range of #y = (x^2 - 1) / (x+1)#?

##### 1 Answer

Apr 4, 2017

Domain:

Range:

#### Explanation:

**except** any value that would make the denominator equal to

That is

(This gives us the Domain).

Notice that if

then

Any real number **except for the already excluded #color(black)(x=-1)#** That is, we can not generate

So the Range must exclude