## Precalculus (10th Edition)

$y=-\frac{1}{2}x-1$
Find the slope of the line using the points of the line (0,-1) and (-2,0), $m=\dfrac{0-(-1)}{-2-0}=\dfrac{1}{]-2}=-\dfrac{1}{2}$ With a y intercept of $1$, the slope-intercept form of the equation of th eline is $y=-\frac{1}{2}x-1$.