There are a lot of Perpendicular line slope calculator that are available online.
Free perpendicular line calculator - find the equation of a perpendicular line step-by-step. Solutions Graphing Practice; New Geometry; Calculators; Notebook . Groups Cheat Slope
If you do not know the slope, m, of the positive sloping line, then you will need to calculate it using the slope formula: m = (y2 − y1) (x2 − x1) m = ( y 2 - y 1) ( x 2 - x 1) Negative Reciprocals Slopes of perpendicular lines will always be negative
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