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# www.wikihow › Find-the-Equation-of-a How to Find the Equation of a Perpendicular Line: 11 Steps

Perpendicular lines are lines intersecting at 90° 90 °. The two lines may not be oriented on a coordinate grid so that one of them lines up with (or is parallel to) either the x-axis or y-axis. They possibly could, but they may not. Here is the difficult part of finding the slope of the line perpendicular to the positively sloping line:Parents nationwide trust IXL to help their kids reach their academic potential. Join now! Unlimited math practice with meaningful, up-to-date tracking on your child's progress.To be perpendicular, they only need to have opposite reciprocal slope. For example, the lines, y=3x+8 and y= - (1/3)x-3 would be perpendicular because -1/3 is the opposite reciprocal of 3. (4 votes)Perpendicular lines have opposite-reciprocal slopes, so the slope of the line we want to find is 1/2. Plugging in the point given into the equation y = 1/2x + b and solving for b, we get b = 6. Thus, the equation of the line is y = ½x + 6. Rearranged, it is –x/2 + y = 6.perpendicular:y=5x+2,:x=1. perpendicular:y=-5x+2,:x=1. perpendicular:4x-2y+6=0,: (2,7) perpendicular:y=3x-2,:x=-1. perpendicular-line-calculator Finding perpendicular lines. en. Finding perpendicular lines.

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