226,731 views
18 votes
18 votes
What is the slope of a line perpendicular to the line whose equation is 9x-3y=81.

User Andrea Mario Lufino
by
2.8k points

1 Answer

4 votes
4 votes

Answer:

If a line has slope =m

then the slope of a line perpendicular to it is

(

1

m

)

Rewrite

5

x

+

3

y

=

8

in a slope-offset format

y

=

5

3

x

+

8

3

So the given equation has a slope of

(

5

3

)

and a line perpendicular to it has a slope of

(

3

5

)

Explanation:

User Gavrilo Adamovic
by
3.1k points