Proportional/Nonproportional Equations

Which best describes the equation?
y = 75x

• Proportional

• Nonproportional

Which of the equations below is proportional?

• y = 6x

• y = 3x + 2

• y = 2x + 4

• y = -2x -1

Does this equation represent a proportional relationship?

• Yes

• No

Does the equation show a proportional relationship?

• Yes

• No

The data in the table represents a proportional relationship. What equation would represent this data accurately?

The cost for 2 lbs of apples is $1.84. Reduce the ratio to determine the equation, where x is the lbs of apples and y is the cost.

• y = .92x

• x = .92y

• y = 2x

• y = 1.84x

Does the equation show a proportional relationship?

• Yes

• No

Find the slope:

y = 2x + 3

• -2

• 3

• 1.5

• 2

Determine the slope and y-intercept from the following equation:   y = 3/2x + 3

• slope: 5   y-intercept:  (0,3) 

• slope: 3/2   y-intercept:  (0,3) 

• slope:  4  y-intercept:  (0,3/2)

• slope: 1/5   y-intercept:  (0,5) 

Does this equation represent a proportional relationship?

• Yes

• No