Find the equation of a line perpendicular to a given line (with known slope) that passes through a specific point. The perpendicular slope is the negative reciprocal.
Find the equation of a line perpendicular to a given line (with known slope) that passes through a specific point. The perpendicular slope is the negative reciprocal.
Slope of the original line
x-coordinate of the point the perpendicular line passes through
y-coordinate of the point the perpendicular line passes through
Perpendicular lines have slopes that are negative reciprocals of each other. Given slope m, the perpendicular slope is -1/m. Substitute into point-slope form with point (px, py).
How this calculator works
Perpendicular lines have slopes that are negative reciprocals of each other. Given slope m, the perpendicular slope is -1/m. Substitute into point-slope form with point (px, py).
Common questions about this calculator
