Slopes of Parallel and Perpendicular Lines

Slopes of parallel lines are...

• opposite (or negative) reciprocals.

• opposites.

• the same.

• always 7.

Tags

CCSS.8.EE.B.5

Slopes of perpendicular lines are...

• opposite (or negative) reciprocals.

• opposites.

• the same.

• always 7.

Tags

CCSS.8.EE.B.6

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

• -2
• 1/2
• -1/2
• 2

Tags

CCSS.8.EE.B.5

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

• -2
• 1/2
• -1/2
• 2

Tags

CCSS.8.EE.B.6

Which equation is parallel to the x-axis and goes through the point (2, 5)?

• x = 2

• x = 5

• y = 2

• y = 5

 $m=\frac{5}{8}$  What slope is perpendicular to: 

•  $-\frac{5}{8}$  

•  $\frac{5}{8}$  

•  $-\frac{8}{5}$  

•  $\frac{8}{5}$  

Tags

CCSS.8.EE.B.5

 $y=-\frac{2}{3}x+2$  

 $y=\frac{3}{2}x+9$  

These lines are...

• Parallel

• Perpendicular

• Skew

Tags

CCSS.8.EE.B.6

If two lines are perpendicular to each other their slopes are ____________

• the same.

• negative reciprocals of each other.

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

What is the slope of any line parallel to the line 9x + 4y = 7 ?

• -9

• 7

• 9

Tags

CCSS.8.EE.B.5