Parallel and Perpendicular Lines
Flashcard
•
Mathematics
•
9th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What are parallel lines?
Back
Parallel lines are lines in a plane that never meet. They have the same slope but different y-intercepts.
2.
FLASHCARD QUESTION
Front
What are perpendicular lines?
Back
Perpendicular lines are lines that intersect at a right angle (90 degrees). The slopes of perpendicular lines are negative reciprocals of each other.
3.
FLASHCARD QUESTION
Front
If two lines have the same slope, what can we say about them?
Back
If two lines have the same slope, they are parallel.
4.
FLASHCARD QUESTION
Front
What is the slope of a horizontal line?
Back
The slope of a horizontal line is 0.
5.
FLASHCARD QUESTION
Front
What is the slope of a vertical line?
Back
The slope of a vertical line is undefined.
6.
FLASHCARD QUESTION
Front
How do you determine if two lines are perpendicular using their slopes?
Back
Two lines are perpendicular if the product of their slopes is -1.
7.
FLASHCARD QUESTION
Front
What is the slope-intercept form of a line?
Back
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