Parallel and Perpendicular Lines
Flashcard
•
Mathematics
•
9th Grade - University
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What is the definition of 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 is the definition of perpendicular lines?
Back
Perpendicular lines are lines that intersect at a right angle (90 degrees). The product of their slopes is -1.
3.
FLASHCARD QUESTION
Front
If a line has a slope of 3, what is the slope of a line parallel to it?
Back
The slope of a line parallel to it is also 3.
4.
FLASHCARD QUESTION
Front
If a line has a slope of 2, what is the slope of a line perpendicular to it?
Back
The slope of a line perpendicular to it is -1/2.
5.
FLASHCARD QUESTION
Front
Write the equation of a line parallel to y = 2x + 3 that passes through the point (1, 5).
Back
y = 2x + 3.
6.
FLASHCARD QUESTION
Front
Write the equation of a line perpendicular to y = -4x + 1 that passes through the point (2, 3).
Back
y = 1/4x + 5/2.
7.
FLASHCARD QUESTION
Front
What is the slope of a horizontal line?
Back
The slope of a horizontal line is 0.
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