# How do you identify the excluded value for the rational function: y=5/(x +1)?

Mar 14, 2018

We cannot divide by zero

#### Explanation:

Because we cannot divide by zero, we can set the denominator of the function equal to zero and solve, with our answers being the $x$ values we must exclude.

$0 = x + 1$

$- 1 = x$

$- 1$ is our excluded value