Slopes and Equations of Lines

Slopes of parallel lines are...

• opposite reciprocals.

• opposites.

• identical.

• always 7.

Slopes of perpendicular lines are...

• opposite reciprocals.

• opposites.

• identical.

• always 7.

What slope is perpendicular to:  
m = 5/8

• -5/8

• 5/8

• -8/5

• 8/5

A line is parallel to   y = 2x - 7.
What is it's slope?

• -2

• 1/2

• -1/2

• 2

What slope is perpendicular to:  
m = 3

• -3

• -1/3

• 1/3

• 3

y = -2/3x + 2
y = 3/2x + 9
These lines are...

• Parallel

• Perpendicular

• Neither

y = 3/2x + 2
y = 2/3x + 6
These lines are...

• Parallel

• Perpendicular

• Neither

Are the two linear equations parallel, perpendicular, or neither?

• Parallel

• Perpendicular

• Neither

Are the two linear equations parallel, perpendicular, or neither?

• Parallel

• Perpendicular

• Neither

• (2, -2)
• (2, 2)
• (-2, 2)
• (-2, -2)