# How do you the slope & the y - intercept for f(x) = -5x - 9 ?

Jul 10, 2015

The slope is $- 5$, and the $y$-intercept is at ($0 , - 9$).

#### Explanation:

The "slope-intercept" form of a straight line equation is

$y = m x + b$,

where $m$ is the slope and $b$ is the $y$-intercept.

$f \left(x\right) = - 5 x - 9$
$m = - 5$ and $b = - 9$.
So the slope is $- 5$ and the $y$-intercept is at ($0 , - 9$).