Parallel and Perpendicular Lines

Two lines that are parallel will have ...

• Slope that is opposite reciprocals

• No slope

• Slope that is the same

• none of the above

What slope is parallel to:  
m = 3/4

• 4/3
• 3/4
• -3/4
• -4/3

Which of the following lines is PERPENDICULAR to the graph of y = -6x + 3 ?

Level 1

What is the slope of a line that is perpendicular to y = 2x - 7?

• -2

• 1/2

• -1/2

• 2

Level 2

y = 3x +2

y = 3x - 3

These lines are...

• Parallel

• Perpendicular

• Neither

• The same line

What slope is perpendicular to:  
m = 5/8

• -5/8
• 5/8
• -8/5
• 8/5

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

• Parallel
• Perpendicular
• Neither

Slopes of perpendicular lines are...

• opposite reciprocals.
• opposites.
• identical.
• always 7.