# How do you find the domain of #f(x) = 8 /( x + 4)#?

##### 2 Answers

#### Answer:

Domain:

#### Explanation:

The domain of a rational function is all the values except for those which that make it undefined. In other words, the denominator of a rational function cannot be

To find which values exactly make the rational function undefined, we set the denominator not equal to

What we have solved for tells us the values (**cannot** be in the domain.

Therefore our domain is all real numbers **except**

What this tells us about the graph as well is that there is a vertical asymptote defined by the line

graph{8/(x+4) [-23.37, 16.63, -9.44, 10.56]}

#### Answer:

Domain of

#### Explanation:

In interval notation: Domain of

The domain can be seen on the graph of

graph{8/(x+4) [-32.47, 32.48, -16.24, 16.23]}