# What is the excluded value for y=(x+2)/(x-1)?

Sep 28, 2017

1

#### Explanation:

To make the denominator 0, you need to do the following, $0 = x - 1$ --> $0 + 1 = x - 1 + 1$---> $1 = x$

Sep 28, 2017

$x = 1$

#### Explanation:

The denominator of y cannot be zero as this would make y undefined. Equating the denominator to zero and solving gives the value that x cannot be.

$\text{solve "x-1=0rArrx=1color(blue)" is the excluded value}$