Question

The slope of a line is -3. Find the slope of a line that is perpendicular to this line.

a.-3
b.-1/3
c.1/3

Answer 1

perpendicular slopes are negative reciprocal of the original one.
Parallel lines have the sam slope

if the slope of the original line is a/b then the perpendicular slope would be `-b/a` flip the fraction and change the sign
and parallel slope would be the same `a/b`

Answer 2

but there aren't any positive answers

Answer 3

given slope is `-3` so what would be the perpendicular slope ?

Answer 4

+3?

Answer 5

first write -3 as a fraction
-3 is same as `-3/1` now flip the fraction and change the sign.