2.4 Parallel and Perpendicular Lines

Two lines that are parallel will have ...

• Slope that is opposite reciprocals

• No slope

• Slope that is the same

• none of the above

Two lines that are perpendicular lines have ...

• Slope that is opposite reciprocals

• No Slope

• Slope that is the same

• none of the above

What slope is parallel to:  
m = 4

• 4
• -1/4
• -4
• 1/4

What slope is perpendicular to:  
m = 5/8

• -5/8
• 5/8
• -8/5
• 8/5

Find the slope of a line PARALLEL to the line that goes through the points (2, 3) (3, 5)

• 1/2

• 2

• -2

• 4

Find the slope of a line that is PERPENDICULAR to the line that goes through the points:

(-1, 2) (3, 5)

• Zero

• -4/3

• 3/4

• undefined

Which of the following lines is PARALLEL to the graph of y = -6x + 3 and goes through the point (-1,4)? Write your answer in point-slope form

• y + 1 = -6(x - 4)

• y - 4 = -6(x - 1)

• y - 4 = -6(x + 1)

• y + 1 = 3(x - 4)

Which of the following equations has a graph PARALLEL to the line y = 4x + 7 and has an x-intercept of -2?

• y = 4x - 2

• y = 4x + 8

• y = 7/2x + 7

• y = -1/4x + 1/2

y = 6x + 2
y = -6x + 2
These lines are...

• Parallel
• Perpendicular
• Neither

What slope is perpendicular to:  
m = 3

• -3
• -1/3
• 1/3
• 3