Parallel & Perpendicular Lines

Slopes of parallel lines are...

• negative reciprocals.

• opposites.

• the same.

• always 7.

Tags

CCSS.8.EE.B.5

What slope is perpendicular to:  
m = 5/8

• -5/8
• 5/8
• -8/5
• 8/5

Tags

CCSS.8.EE.B.6

What slope is parallel to:  
m = 4

• 4
• -1/4
• -4
• 1/4

Tags

CCSS.8.EE.B.6

What slope is perpendicular to:  
m = 3

• -3
• -1/3
• 1/3
• 3

Tags

CCSS.8.EE.B.6

Are these two lines parallel, perpendicular or neither?
y = -1/3x - 5
y = 1/3x + 2

• Parallel
• Perpendicular
• Neither

Tags

CCSS.8.EE.B.6

Use the equations given to determine if the following lines are parallel, perpendicular, neither or both.
y=4x-2
y-3=-1/4(x-8)

• parallel
• perpendicular
• neither parallel nor perpendicular
• both parallel and perpendicular

Tags

CCSS.8.EE.B.6

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

• Parallel
• Perpendicular
• Neither

Tags

CCSS.8.EE.C.8B

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

• Parallel
• Perpendicular
• Neither

Tags

CCSS.8.EE.B.6

y = 3/2x + 2
y = 2/3x + 6
These lines are...

• Parallel
• Perpendicular
• Neither

Tags

CCSS.HSG.CO.A.1

A line is parallel to   y = 2x - 7.
What is it's slope?

• -2
• 1/2
• -1/2
• 2

Tags

CCSS.8.EE.B.5