Parallel and Perpendicular Lines

Flashcard
•
Mathematics
•
9th Grade
•
Hard
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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 two perpendicular lines are negative reciprocals of each other.
3.
FLASHCARD QUESTION
Front
If the slope of one line is m, what is the slope of a line perpendicular to it?
Back
The slope of a line perpendicular to a line with slope m is -1/m.
4.
FLASHCARD QUESTION
Front
What is the slope of the line represented by the equation y = 3x + 5?
Back
The slope of the line is 3.
5.
FLASHCARD QUESTION
Front
Which of the following equations represents a line parallel to y = 2x + 1? y = 2x - 4 or y = -2x + 1
Back
y = 2x - 4 is parallel to y = 2x + 1.
6.
FLASHCARD QUESTION
Front
Determine if the lines y = 4x + 2 and y = 4x - 3 are parallel, perpendicular, or neither.
Back
The lines are parallel because they have the same slope (4).
7.
FLASHCARD QUESTION
Front
What is the slope of the line represented by the equation y = -1/2x + 3?
Back
The slope of the line is -1/2.
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