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Given two points, finding the equation of the line perpendicular to it
In this video series I show you how to determine a line that is parallel or perpendicular to another line through a point.
Why not see how much you know about this topic already? Then work through the page and see if you can beat your score. Parallel lines are the same distance apart from each other all the way along ...
Horizontal lines run left to right, parallel to the horizon, with slope 0 and equation y = k. Vertical lines run top to bottom, perpendicular to the horizon, with undefined slope and equation x = k.
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