Question

If line b is perpendicular to line a, and linec

is perpendicular to line a, what is the slope
of line c?

Answer 1

Since both lines c and b are perpendicular to line a, line c and b are parallel.

Using the two points on line b, we can count “up 5, right 5” to find the slope of line b to be 5/5 or 1.

Since line b has a slope of 1 and line c is parallel, it must also have a slope of 1.