Answer
m2 =$\frac{a-b}{c}$
Work Step by Step
Parallel lines l1 and l2 have slopes m1 and m2,respectively,
We need to find out m2 if m1 is equal to
$\frac{a-b}{c}$
Using Theorem 10.2.1
If two non vertical lines are parallel, then their slopes are equal.
therefore m2= $\frac{a-b}{c}$
