Perpendicular Lines and Slope

Slopes of Perpendicular lines are __________?

• Opposite

• Reciprocals

• Opposite Reciprocals

• Equal

y = -2/3x + 2
y = 3/2x + 9
These lines are...

• Parallel

• Perpendicular

• Neither

What is the slope of a line perpendicular to the line whose equation is: -2x + y = - 7?

• -2

• 1/2

• -1/2

• 2

Match the following to its perpendicular slope

• -4/5

• 15/4

• 5/7

• -2/3

• -4/15

• 5/4

• 3/2

• -7/5

The two lines are _____________________.

• Parallel

• Perpendicular

• Neither

Which of the following lines goes through the point        (-3, 4) and is perpendicular to  y = 3/2x + 6?

• y = 3/2x - 6

• y = 2/3x + 3

• y = -2/3x - 2

• y = -2/3x + 2

Are the lines Perpendicular? How do you know? Line 1 runs through the point (0, -1) and (7, 1) Line 2 runs through the point (-1, 4) and (2, -5)

• Yes, their slopes are opposite reciprocals

• No, their slopes are not opposite reciprocals

• Yes, their slope are the same

• No, their slopes are not the same

What is the slope of a line perpendicular to 5?

• 5

• 1/5

• -1/5

• -5

Slopes of perpendicular lines are...

• opposite reciprocals.

• opposites.

• the same.

• always 7.

What slope is perpendicular to:  
m = 5/8

• -5/8

• 5/8

• -8/5

• 8/5