# What is the excluded value for y=5/x?

$x = 0$
The denominator of y cannot be zero as this would make y $\textcolor{b l u e}{\text{undefined}}$
$\text{the denominator will be zero if } x = 0$
$\Rightarrow x = 0 \leftarrow \textcolor{red}{\text{ is the excluded value}}$