Point Slope Parallel and Perpendicular

Slopes of parallel lines are...

• Opposite Reciprocals

• Opposites

• The Same

• Reciprocals

Slopes of perpendicular lines are...

• Opposite Reciprocals

• Opposites

• The Same

• Reciprocals

What slope is parallel to:  
m = 4

• 4

• -1/4

• -4

• 1/4

What slope is perpendicular to:  
m = 5/8

• -5/8

• 5/8

• -8/5

• 8/5

Choose the best answer to fill in the blanks.

Parallel lines always have the ​ (a)   slope.

Perpendicular lines have slopes that are ​ (b)   .

The product of perpendicular slopes always equals ​ (c)  

• same

• negative reciprocals

• -1

• reciprocals

• 1

• different

Choose the best answer to fill in the blanks. Parallel lines always have the ​ (a)   slope. Perpendicular lines have slopes that are ​ (b)   . The product of perpendicular slopes always equals ​ (c)  

• same

• negative reciprocals

• -1

• reciprocals

• 1

• different

• -3

• 1

• -1

• 3

y = -2/3x + 2 y = 3/2x + 9 These lines are ​ (a)   because the slopes are ​ (b)   .

• perpendicular

• opposite reciprocals

• Parallel

• Neither

• the same

Tags

AI.9.2

y = -2/3x + 2 y = 3/2x + 9 These lines are ​ (a)   because the slopes are ​ (b)   .

• perpendicular

• opposite reciprocals

• Parallel

• Neither

• the same

Tags

AI.9.2

Perpendicular lines have _________________ slope.

• The Same

• Opposite Reciprocal