The equation of line m is 4x + 5y = -2. What is the slope of a line that is perpendicular to line m?
A. 4/5
B. -5/4
C. 2/5
D. 5/4
A. 4/5
B. -5/4
C. 2/5
D. 5/4
1 Answer
Feb 5, 2017
D
Explanation:
Product of slopes of two per[endicular lines is
To find the slope of
let us convert it into slope intercept form i.e.
i.e.
Hence, slope of line perpendicular to it will be
=
=
Hence, answer is D.