Slope of a Parallel Line
If the lines ax-y=6 and 4x+(a+4)y=-6 are parallel, what is a=?© SolutionLibrary Inc. solutionlibary.com 9836dcf9d7 https://solutionlibrary.com/math/algebra/slope-of-a-parallel-line-1qe
...nt of x in an equation written for y. So for the first line,
y=ax-6. and the slope1 is a.