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Writing Equations Parallel
Writing Equations Perpendicular
Classifying Lines
Always, Sometimes or Never
Mixed Bag
100

Parallel Lines have the ________ slopes.

What is the same?

100

What is the slope of the line perpendicular to : y = 2x + 7

What is - 1/2?

100

Are the graphs of 4y = -5x + 12 and y = 4/5x - 8 parallel, perpendicular or neither?

What is perpendicular?

100
A horizontal line is parallel to the x-axis.
What is always?
100
A vertical line and a horizontal line are always __________.
What is perpendicular?
200

What is the slope of the line parallel to: y = 2x + 7

What is 2?

200
What is the slope of the line perpendicular to: y = 1/4x + 8
What is -4?
200
Are the graphs of y = 9x + 2 and y = 9x parallel, perpendicular or neither?
What is parallel?
200
A vertical line is perpendicular to the y-axis.
What is never?
200
Lines in the same plane that never intersect.
What are parallel lines?
300

What is the slope of the line parallel to a line that has the slope of m=6

What is 6?

300

What is the slope of the line perpendicular to: y = 7x + 4

What is -1/7?

300
Are the graphs of y = -5x + 12 and y = 4/5x - 8 parallel, perpendicular or neither?
What is neither?
300
Two lines with positive slopes are parallel.
What is sometimes?
300

What is the slope of a line that is perpendicular to the y-axis?

What is zero?

400

What is the slope of the line parallel to: 3x + 2y = 5

What is -3/2?

400
Perpendicular slopes can be found by __________.
What is using opposite reciprocal slopes?
400
Are the graphs of y = 1/3x - 1 and y = 3x + 2 parallel, perpendicular or neither?
What is neither?
400
Two lines with the same slope and different y-intercepts are perpendicular.
What is never?
400

How can you determine if the graphs of two lines are parallel or perpendicular without graphing the lines?

What is by comparing the slopes.

500

What is the slope of the line parallel to: 2y - x = 9

What is -1/2?

500
What is the slope of the line perpendicular to 2x + 9y = 3?
What is 2/9?
500
Are the graphs of y = 3/4x + 2 and 4x - 3y = 9 parallel, perpendicular or neither?
What is neither?
500
Two lines with different slopes are perpendicular.
What is sometimes?
500

What is the equation of the line parallel to y = 3x -7 and goes through point (2,4)

What is 4=3(2)+b, b=-2, y=3x-2