parallel and perpendicular lines

Slopes of parallel lines are...

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

A line that is parallel to this line would have what slope?
y= 2x - 7

• 2
• 1/2
• -1/2
• 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

The following represents slopes of two lines.  Which answer choice describes the two lines?
m = 7 and m = -7

• Parallel
• Perpendicular
• Neither

• Parallel

• Perpendicular

• Neither

What does "m" represent in y=mx+b?

• y-intercept
• slope
• measurements
• nothing

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

• Parallel
• Perpendicular
• Neither

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

• Positive

• Negative

• Zero

• Undefined

Find the slope of the line.

• Undefined
• 0
• 1
• -1