Question

The slope of a line is -1/3. Find the slope of a line that is perpendicular to this line.

-3
1/3
3

Answer 1

it 3 becosue it is switched 

Answer 2

Perpendicular lines always have slopes which are negative reciprocals of each other. Mathematically:

m1*m2=-1

In this case:

-1m/3=-1

m=3

So the slope of a perpendicular line to a line with a slope of -1/3 is 3.