Slope – Parallel and Perpendicular Lines Mrs. King and Ms. Reed Geometry Unit 12, Day 9 http://jwelker.lps/lessons/ppt/geod_3_3_slope.ppt Slope - Defined Given two points (x 1 , y 1 ) and (x 2 , y 2 ), the slope m of a line is defined to be: 2 1 2 1 y y y o ...
Slope – Parallel and Perpendicular Lines
When one line is vertical, the line perpendicular to it will be horizontal, having a slope of zero (m=0m=0).Example Determine whether the lines y=−8x+5y=−8x+5 and y=18x−1y=18x−1 are parallel, perpendicular, or neither. Show Solution ...
To find a perpendicular slope:When one line has a slope of m, a perpendicular line has a slope of −1mIn other words the negative reciprocalExample: Find the equation of the line that is perpendicular to y = −4x + 10 and passes though the point (7,2) The slope of y = −4x...
Quiz: Slopes of Parallel and Perpendicular Lines Points with coordinates (–9, –3) and (11, 4) lie on linel. Which of the following depicts the slope of a line perpendicular to linel? 1/3 Next PreviousSlopes of Parallel and Perpendicular Lines NextEquations of Lines...
When solving problems, it is helpful to know the relationship that exists between parallel and perpendicular lines. In this lesson, you will learn about the slopes of parallel and perpendicular lines. Slope Properties for Parallel and Perpendicular Lines Jill just learned about the relationship betwe...
The product of their slopes will be −1−1, except in the case where one of the lines is vertical causing its slope to be undefined. You can use these relationships to find an equation of a line that goes through a particular point and is parallel or perpendicular to another line....
系统标签: perpendicular parallel lines slopes slope intercept MATHPOWER TM 10,WESTERNEDITION Chapter6CoordinateGeometry 6.7 6.7.1 ParallelLines A(-3,0) B(0,5) C(0,-5) D(3,0) m AB 5 0 0 3 m CD 0 5 3 0 m CD 5 3 m AB 5 3 Iftheslopesoftwolinesare equal,thelinesareparallel. ...
Discover parallel and perpendicular lines. Learn how to find parallel and perpendicular lines using equations. View each one on a graph and compare...
The lines are parallel if and only if they have the same slope: m1 = m2 The lines are perpendicular if their slopes are negative reciprocals of each other. Therefore, perpendicular lines have the following relationships between their slopes: or Practice 1. Determine the quadrant for the ...