# Find the slope of a line perpendicular to the line 3x−y=8

Find the slope of a line perpendicular to the line 3x−y=8
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Mekhi Parker
I would write your line in the form y=mx+c, where m is the slope, as:
y=3x−8
So your line has slope m=3
The line perpendicular to this one will have slope ${m}_{1}=-\frac{1}{m}=-\frac{1}{3}$