Algebra 1 Notes Lesson 5-6: Parallel and Perpendicular Lines.
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Transcript of Algebra 1 Notes Lesson 5-6: Parallel and Perpendicular Lines.
![Page 1: Algebra 1 Notes Lesson 5-6: Parallel and Perpendicular Lines.](https://reader036.fdocuments.net/reader036/viewer/2022083009/5697bfc61a28abf838ca6f15/html5/thumbnails/1.jpg)
Algebra 1 Notes
Lesson 5-6:Parallel and
Perpendicular Lines
![Page 2: Algebra 1 Notes Lesson 5-6: Parallel and Perpendicular Lines.](https://reader036.fdocuments.net/reader036/viewer/2022083009/5697bfc61a28abf838ca6f15/html5/thumbnails/2.jpg)
Vocabulary
• Parallel Lines
![Page 3: Algebra 1 Notes Lesson 5-6: Parallel and Perpendicular Lines.](https://reader036.fdocuments.net/reader036/viewer/2022083009/5697bfc61a28abf838ca6f15/html5/thumbnails/3.jpg)
Parallel Lines in a Coordinate Plane
Two nonvertical lines are parallel if they have the same slope. All vertical lines are parallel.
![Page 4: Algebra 1 Notes Lesson 5-6: Parallel and Perpendicular Lines.](https://reader036.fdocuments.net/reader036/viewer/2022083009/5697bfc61a28abf838ca6f15/html5/thumbnails/4.jpg)
Example 1Write the slope-intercept form of an equation for the line that passes through (4, –2) and is parallel to the graph of 72
1 xy
![Page 5: Algebra 1 Notes Lesson 5-6: Parallel and Perpendicular Lines.](https://reader036.fdocuments.net/reader036/viewer/2022083009/5697bfc61a28abf838ca6f15/html5/thumbnails/5.jpg)
Vocabulary
• Parallel Lines
• Perpendicular Lines
![Page 6: Algebra 1 Notes Lesson 5-6: Parallel and Perpendicular Lines.](https://reader036.fdocuments.net/reader036/viewer/2022083009/5697bfc61a28abf838ca6f15/html5/thumbnails/6.jpg)
Perpendicular Lines in a Coordinate Plane
Two nonvertical lines are perpendicular if the product of their slopes is –1. That is, the slopes are opposite reciprocals of each other. Vertical lines and horizontal lines are also perpendicular.
![Page 7: Algebra 1 Notes Lesson 5-6: Parallel and Perpendicular Lines.](https://reader036.fdocuments.net/reader036/viewer/2022083009/5697bfc61a28abf838ca6f15/html5/thumbnails/7.jpg)
Example 2Write the slope-intercept form of an equation for the line that passes through (4, –1) and is perpendicular to the graph of
327 yx