# How do you evaluate the function f(x)=2 for f(-4)?

$f \left(- 4\right) = 2$
The function $f \left(x\right) = 2$ is simply a horizontal line with no slope. With that being said, for any input $x$ the output will always be $2$. Therefore, $f \left(- 4\right) = 2$
Graphically, the line $y = 2$ is shown:
This shows that every $x$ value will have the same $y$ value