# How do you evaluate w(-4) given w(t)=t-5?

Feb 6, 2017

See the entire solution process below:

#### Explanation:

To evaluate $w \left(- 4\right)$ we need to substitute $\textcolor{red}{- 4}$ for every occurrence of $\textcolor{red}{t}$ in the function from the problem:

$w \left(\textcolor{red}{t}\right) = \textcolor{red}{t} - 5$ becomes:

$w \left(\textcolor{red}{- 4}\right) = \textcolor{red}{- 4} - 5$

$w \left(\textcolor{red}{- 4}\right) = - 9$