Slopes of Parallel & Perpendicular Lines

Parallel lines have __________ slopes

• Equal
• Opposite
• Reciprocal 
• Total

What slope is parallel to:  
m = 3/4

• 4/3
• 3/4
• -3/4
• -4/3

What slope is parallel to:  
m = 4

• 4
• -1/4
• -4
• 1/4

The following represents slopes of two lines. Which answer choice describes the two lines?
 $m=-\frac{1}{3}$  and  $m=-\frac{1}{3}$  .

• Parallel

• Perpendicular

• Neither

Slopes of perpendicular lines are...

• opposite reciprocals.
• opposites.
• identical.
• always 7.

What is the slope of a line perpendicular to a line with slope ^-6/₅ ?

• ^-6/₅
• ^-5/6
• ⁵/₆
• ^-4/₃

What is the slope of a line perpendicular to 5?

• 5

• 1/5

• -1/5

• -5

What is the slope of a line perpendicular to -10/3

• -10/3

• 10/3

• 3/10

• -3/10

Are the lines shown Parallel, Perpendicular, or Neither?

• Parallel

• Perpendicular

• Neither

Are the lines shown parallel. perpendicular, or neither?

• Parallel

• Perpendicular

• Neither