# How do you write the slope intercept form of the equation given slope -1 and y intercept -5?

$y = - x - 5$
"Slope intercept form" uses the format $y = m x + b$, where $m$ is the slope and $b$ is the $y$-intercept.
Plugging $- 1$ in for $m$ and $- 5$ in for $b$ gives you $y = - 1 x \pm 5$, or, more simply, $y = - x - 5$.