Slope: $-4$; y-intercept: $(0,12)$
Work Step by Step
We are given the line $y=-4x+12$. This line is written in the slope-intercept form $y=mx+b$ (where m is the slope of the line, and the point $(0,b)$ is the y-intercept). Therefore, the slope of this line is $-4$ and the y-intercept is $(0,12)$.