Parallel and Perpendicular Lines Based on Slopes

-Two lines that intersect to form right angles

-Slopes are OPPOSITE RECIPROCAL (flip & switch)

• Perpendicular Lines

• Adjacent Angles

• Parallel Lines

• Corresponding Angles

Tags

CCSS.HSG.CO.A.1

CCSS.4.G.A.1

-Lines that Never Intersect

-Slopes are the SAME

• Adjacent Angles

• Corresponding Angles

• Same-Side Interior Angles

• Parallel Lines

Tags

CCSS.8.G.A.5

The slope for parallel lines will ​ (a)  

and the slope for perpendicular lines will be ​ (b)   .

• be the same

• the negative reciprocal

• the opposite

• the reciprocal

Tags

CCSS.8.EE.B.6

Tags

CCSS.8.G.A.5

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

• Parallel

• Perpendicular

• Neither

• The same line

Tags

CCSS.HSG.CO.A.1

Are these two lines parallel, perpendicular or neither?
y = -1/3x - 5
y = 1/3x + 2

• Parallel

• Perpendicular

• Neither

Tags

CCSS.8.EE.B.6

Match the following to its perpendicular slope

• -4/5

• 15/4

• 5/7

• 5/4

• 3/2

• -2/3

• -4/15

• -7/5

Tags

CCSS.8.EE.B.5

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

• Parallel

• Perpendicular

• Neither

Tags

CCSS.8.EE.B.6

​ (a)   lines intersect to create right angles.
​ (b)   lines never touch and maintain the same distance.

• Perpendicular

• Parallel

Tags

CCSS.HSG.CO.A.1

CCSS.4.G.A.1

Identify the correct perpendicular slope of each given slope.

• -2

• -1

• 2

Tags

CCSS.8.EE.B.6