Parallel and Perpendicular Slopes

Compare

100

Are these Parallel, Perpendicular, or Neither: 

y = 5x + 4 

y = -2/3x + 4.

What is Neither?

200

Are these Parallel, Perpendicular, or Neither: 

y = 5x + 4 

y = 5x - 4.

What is parallel?

300

Are these Parallel, Perpendicular, or Neither: 

y = 5x + 4 

14 - 1/5x = y

What is perpendicular?

400

Are these Parallel, Perpendicular, or Neither: 

y = 2/3x -1 

y = -2/3x + 4.

What is Neither?

500

Are these Parallel, Perpendicular, or Neither: 

y = -15/3x + 4 

y = 1/5x+ 30.

What is perpendicular?

What is the Slope?

100

What slope is parallel to the line below?

y = 2x -5?

2

200

What slope is perpendicular to the line below?

y = 2x -5?

What is -1/2?

300

What slope is perpendicular to the line below?

y = -2/3x + 18?

What is 3/2?

400

What slope is parallel to the line below?

y - 2 = 5 (x + 7)?

What is 5?

500

What slope is parallel to the line below?

3x + y = 9

-3?

Parallel, Perpendicular, or Neither?

100

Are the Slopes of Line AB and Line CD Parallel, Perpendicular, or Neither

A: (-3, 13) B: (4, -15)

C: (-2, 5) D: (1, -7)

Line AB: -4   Line CD: -4

Parallel

200

Are the Slopes of Line AB and Line CD Parallel, Perpendicular, or Neither

A: (-3, 8) B: (3, 2)

C: (7, 1) D: (5, -1)

Line AB: -1   Line CD: 1

Perpendicular

300

Are the Slopes of Line AB and Line CD Parallel, Perpendicular, or Neither

A: (5, -8) B: (-2, -10)

C: (-6, -13) D: (-2, 1)

Line AB: 2/7  Line CD: 7/2

Neither

400

Are the Slopes of Line AB and Line CD Parallel, Perpendicular, or Neither

A: (-4, 7) B: (-2, 6)

C: (2, -2) D: (-8, 3)

Line AB: -1/2   Line CD: -1/2

Parallel

500

Are the Slopes of Line AB and Line CD Parallel, Perpendicular, or Neither

A: (0, -2) B: (0, 7)

C: (3, -5) D: (6, -5)

Line AB: Undefined   Line CD: 0

Perpendicular

Perpendicular Equations

100

What slope is perpendicular to the line below?

y=3/4x + 6

-4/3

200

What slope is perpendicular to the line below?

y = 1/2x - 6?

-2

300

What slope is perpendicular to the line below?

y = -8x + 2.

1/8

400

What slope is perpendicular to the line below?

y = 0x - 5

Undefined

500

What slope is perpendicular to the line below?

y = -9/4x + 6

4/9

Vocabulary

100

What is the slope formula?

y₂ - y₁ / x₂ - x₁

200

What do we call lines that do not intersect but are also not parallel?

What are skew lines?

300

What is another word for Rise over Run?

What is Slope?

400

What do you call lines that go the same direction but never meet?

What are Parallel Lines?

500

What do you call lines that intersect to form four right angles?

What are perpendicular lines?