Parallel and Perpendicular Lines

Slopes of parallel lines are...

• opposite reciprocals.
• opposites.
• the same.
• always 7.

Slopes of perpendicular lines are...

• opposite reciprocals.
• opposites.
• the same.
• always 7.

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

• Parallel
• Perpendicular
• Neither
• The same line

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

• Parallel
• Perpendicular
• Neither

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

• Parallel
• Perpendicular
• Neither

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

• ^-6/₅
• ^-5/6
• ⁵/₆
• ^-4/₃

What slope is parallel to:  
m = ³/₄

• ⁴/₃
• ³/₄
• ^-3/₄
• ^-4/₃

What describes the slope of the line shown on the graph?

• Positive

• Negative

• Zero

• Undefined

What is the slope of a line that contains the points (1, -1) and (-2, 8)?

• -3

• -7/3

• -1/3

• 1/3

What is the slope of the line shown in the graph?

• Positive

• Negative

• Zero

• Undefined