## Intermediate Algebra (6th Edition)

We are given the lines $y=-5x+8$ $y=-5x-8$ These lines are 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). These lines both have a slope of -5 and a different y-intercept, so they must be parallel.