Parallel and Perpendicular Lines

Parallel lines have the _______ slope

Tags

CCSS.4.G.A.1

CCSS.HSG.CO.A.1

Perpendicular lines have ________ slopes

• same

• opposite

• opposite reciprocal

• reciprocal

Which figure shows a set of parallel lines?

• Figure 1
• Figure 2
• Figure 3
• Figure 4

Which figure shows a set of perpendicular lines?

• Figure 1
• Figure 2
• Figure 3
• Figure 4

What slope is parallel to:  
m = 4

• 4
• -1/4
• -4
• 1/4

What slope is perpendicular to:  
m = 5/8

• -5/8
• 5/8
• -8/5
• 8/5

What slope is perpendicular to:  
m = 3

• -3
• -1/3
• 1/3
• 3

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

• Parallel
• Perpendicular
• Neither

Tags

CCSS.8.EE.B.6

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

• Parallel
• Perpendicular
• Neither

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

• y-intercept
• slope
• measurements
• nothing