Parallel and perpendicular lines in linear functions - Linear Functions
Parallel and perpendicular lines in linear functions
Parallel lines are lines with identical slope. In other words, these lines will never cross each other. Perpendicular lines will always pass through each other and form right angles at the interception. In this lesson, we will learn how to use information such as, points in lines and their slopes, to determine whether the lines are parallel, perpendicular or neither.
Basic Concepts
- Slope equation:
- Slope intercept form: y = mx + b
- Point-slope form:
Lessons
Notes:
Parallel linesidentical slope so they never intersect each other, unless overlapped.
Perpendicular linestwo lines form right angles to each other when they intersect. If the slope of first line is , the slope of perpendicular line is the slope of perpendicular line is . The product of the two slopes is -1.
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Intro Lesson
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3.
Given the points of two lines, determine when the lines are parallel, perpendicular or neither.
