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Learn how to use algebra to find parallel and perpendicular lines with the same or negative reciprocal slopes. See examples, formulas, and tips for vertical lines and checking perpendicularity.
18 kwi 2020 · Learn how to find and use the slopes of parallel and perpendicular lines to graph them. See examples, formulas, videos and practice problems with this free lesson guide from Mashup Math.
22 kwi 2020 · Join us on this math lesson where you will learn how to find the slopes of parallel and perpendicular lines and equations, parallel slope, perpendicular slope and examples! ...more.
Parallel lines never intersect, and perpendicular lines intersect at a 90 degree angle. Learn how to identify parallel and perpendicular lines. Created by Sal Khan.
Both lines have a slope \(m=\frac{3}{4}\) and thus are parallel. Perpendicular lines are lines in the same plane that intersect at right angles (\(90\) degrees). Two nonvertical lines in the same plane, with slopes \(m_{1}\) and \(m_{2}\), are perpendicular if the product of their slopes is \(−1: m1⋅m2=−1\).
Learn how to tell if two distinct lines are parallel, perpendicular, or neither. Use the slope formula to calculate the slope of each line to determine if they are parallel, perpendicular, or neither.
Parallel lines and their slopes are easy. Since slope is a measure of the angle of a line from the horizontal, and since parallel lines must have the same angle, then parallel lines have the same slope — and lines with the same slope are parallel. Perpendicular lines are a bit more complicated.
