#### Answer

Slope: $-6$
$y$-intercept: $0$

#### Work Step by Step

The slope-intercept form of a linear equation of a non vertical line is $y=mx+b$, where $m$ is the slope and $b$ is the $y$-intercept.
We use this to pick out the slope and the $y$-intercept from the equation $y=-6x$.
We can rewrite this equation in slope-intercept form as $y=-6x+0$, using the identity property of addition.
Since $-6$ takes the place of $m$ in the equation, it is the slope.
Since $0$ takes the place of $b$ in the equation, it is the $y$-intercept.