Slopes of Parallel and Perpendicular Lines

Slopes of Parallel and Perpendicular Lines

page 197

10/23/20

Open Ended

What did you put as your answer for problem 1 got it?

Open Ended

What did you put as your answer for problem 2 got it?

Perpendicular Lines have slopes that are Opposite Reciprocals

Opposite: + and -

Reciprocals: Flip Fractions

Product of both slops is -1!

Multiple Choice

What is the opposite reciprocal of -2?

• 1/4

• 1/2

• -1/2

• 2

Multiple Choice

What is the opposite reciprocal of 2

• 4

• -1/2

• 2/1

• 2/2

Multiple Choice

Are the following slopes parallel, perpendicular or neither?
 $m=\frac{-2}{3}\ \ and\ m=\frac{3}{2}$  

• Parallel

• Perpendicular

• Neither

Multiple Choice

 $\frac{tik}{tok}$  

•  $\frac{tok}{tik}$  

•  $-\frac{tok}{tik}$  

•  $\frac{tik}{tok}$  

•  $-\frac{tik}{tok}$  

Multiple Choice

 $-\frac{7}{9}$  

•  $\frac{7}{9}$  

•  $-\frac{7}{9}$  

•  $\frac{9}{7}$  

•  $-\frac{9}{7}$  

Multiple Choice

 $\frac{3}{4}$  

•  $\frac{3}{4}$  

•  $-\frac{3}{4}$  

•  $\frac{4}{3}$  

•  $-\frac{4}{3}$  

Open Ended

What is your solution to problem 3 got it?

Open Ended

What is your answer for problem 4 got it?

Multiple Choice

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

• Parallel
• Perpendicular
• Neither

Multiple Choice

What slope is parallel to:  
m = 4

• 4
• -1/4
• -4
• 1/4

Multiple Choice

What slope is parallel to:  
m = 3/4

• 4/3
• 3/4
• -3/4
• -4/3

Multiple Choice

Slopes of perpendicular lines are...

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

Multiple Choice

Slopes of parallel lines are...

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