Parallel and Perpendicular Lines

Two lines that are parallel will have ...

• Slopes that are opposite reciprocals

• No slope

• Slopes that are the same

• Slopes that don't match

Two lines that are perpendicular lines have ...

• Slopes that are negative reciprocals

• No Slope

• Slopes that are the same

• Slopes that switch the numbers

What is the slope of a line parallel to the line

 $y=-5x-17$  

•  $\frac{1}{5}$  

• -5

•  $-\frac{1}{5}$  

• 5

What is the slope of a line perpendicular to: 

 $y=13x-2$  ?

•  $\frac{1}{13}$  

•  $-\frac{1}{13}$  

• 13

• -13

What is the slope of a line perpendicular to: 

 $y=\frac{5}{8}x-2$  ?
(Just type the slope)

What is the slope of a line perpendicular to the line

 $y=-\frac{1}{4}x-17$  
(Just type the slope)

Which equation is perpendicular to:
 y = -6x +2

• y = 6x +1
• y = 1/6x +4
• y = -6x +3
• y = -1/6x +5

Are the lines below parallel, perpendicular, or neither?

• Parallel

• Perpendicular

• Neither

Are the lines below parallel, perpendicular, or neither?

• Parallel

• Perpendicular

• Neither

Which equation is parallel to y = 3/2x + 3?

• y = 3/2x - 2

• y = 2/3x + 4

• y = -3/2x +1

• y = -2/3x -5