Parallel & Perpendicular Lines
Perpendicular Lines
Example 1
Find the equation of a line perpendicular to y = -3x + 5 that passes through the point (2, 6).
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Step 1.Find the slope of the given line y = -3x +5 .
m1 = -3
Step 2. Find the opposite reciprocal of the given slope.
Step 3. Write an equation of a line with slope 
that passes through point (2, 6) using the point-slope form.
Step 4. Simplify.
The equation of the line perpendicular is: 