Proportionality from Graphs, Tables and Equations

What is the equation?

• y = 1/4x

• y = 4x

• y = x + 4

• y = x - 4

Find the constant of proportionality in the graph below.

• 9

• 4.5

• 3

• 1.5

An musician projects that he will earn $540.00 for every 150 songs downloaded. Which of the following equations can be used to represent the proportional relationship between the number of apps, x, and the total earnings, y.

• y = 150x + 540

• y = 540x + 150

• x = 3.60y

• y = 3.60x

The graph shows the amount of money that Terrance saves each week from his lawn moving job. Which best represents the constant of proportionality?

• (0, 0)

• (1, 200)

• (200, 1)

• (2, 200)

The following graph shows the relationship between the number of times a gear can rotate in a period of time. Which of the following statements NOT is true?

• If the gear rotates 30 times, then it has been rotating for 1.5 minutes.

• The graph satisfies the equation y = 20x.

• If the machine rotates for 5 minutes, then it will make 100 rotations.

• The relationship is non-proportional.

Which graph is non-proportional?

• A

• B

• C

• D

What coordinate shows the constant of proportionality?

• (1, 1)

• (0, 0)

• (6, 1)

• (1, 6)

A 6-ounce package of fruit snacks contains 70 pieces. How many pieces would you expect in a 3-ounce package?

• 35 pieces

• 140 pieces

• 140 ounces

• 35 ounces

A standard bathtub holds 60 gallons of water. A full tub drains 12 gallons per minute. Which of the following tables best represents the situation?

• 
• 
• 
• 

Which of the following represents the constant of proportionality in the table below?

• k = 85

• k = 95

• k = 190

• k = 125