positive

negative

zero

undefined

positive

negative

zero

undefined

y = 2/5x + 1

y = 2/5x -1

y = 2x + 5

y = 5x + 2

y = 4x + 8

y = x + 4

y = 4x + 4

y = 4x

y = 2x - 5

y = 2x + 5

y = 5x + 2

y = 2x - 2

y = 4x + 3

y = 4x -3

y = 3x + 4

y = 8x + 2

y = -5/2x - 2

y = 5/2x - 1

y = 2/5x - 3

y = 5/2x - 3

y = 100x + 25

y = 100x - 25

y = 25x + 100

y = 25x - 100

Brooklyn College

Howard University

TYWLS College

Penn State

y = 5x + 20

y = 5x - 20

y = 20x + 5

y = 20x - 5

Proportional

Non-Proportional

Proportional

Non-Proportional

travels in a straight line

curves

is proportional

is non-proportional

y intercept

run of the graph

rise of the graph

rate of change

3

1

9

7

Car A

Car B

Car C

Car D

Phillip will spend $8 less on cherries at Store P than at Store Q.

Phillip will spend $8 more on cherries at Store P than at Store Q.

Phillip will spend $6 less on cherries at Store P than at Store Q.

Phillip will spend $6 more on cherries at Store P than at Store Q.

0.5 hour

1 hour

2 hour

5 hour

1/5 gallon per minute

3/5 gallon per minute

5/2 gallon per minute

15/2 gallon per minute

y = 2/3x + 1

y = 2/3x + 9

y =  -2/3x + 5

y = -2/3x + 9

-2/3

2/3x

2/3

-3/2

y = -2

y = -2x

y = x - 2

y = -2x - 2

y = 1/3x

y = 1/3x - 6

y = 1/3x - 2

y = 1/3x + 2

2x + 8.50 = y

2.25x + 4.00 = y

6.50x + 2.25 = y

12x + 22.50 = y