Parallel and Perpendicular Slopes of Lines

y = 5/7x +2
y = 5/7x - 30
These lines are...

• Parallel

• Perpendicular

• Neither

• Parallel

• Perpendicular

• Intersecting

Slopes of perpendicular lines are...

• opposite reciprocals

• opposites

• identical

• reciprocals

What slope is perpendicular to:  
m = 5/8

• -5/8

• 5/8

• -8/5

• 8/5

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

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

Slopes of parallel lines are...

(a)  

• the same.

• opposite reciprocals.

• always negative.

• reciprocals.

• The slopes are the same.

• The slopes are negative reciprocals

• There is not enough information to answer this question.