# Perpendicular

Determine the slope of the line perpendicular to the line

**p: y = -x +4**.### Correct answer:

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Line slope calculator is helpful for basic calculations in analytic geometry. The coordinates of two points in the plane calculate slope, normal and parametric line equation(s), slope, directional angle, direction vector, the length of the segment, intersections of the coordinate axes, etc.

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Do you have a linear equation or system of equations and looking for its solution? Or do you have a quadratic equation?

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