Constant of Proportionality

3 servings of pizza is 624 calories. Which equation can be used to show how many calories are in each serving of pizza?

• y = 1872x

• y = 208x

• y = 1/208x

• y = 3x

Is the given table a proportional relationship? If so, what is the constant?

• Yes; 1/3

• Yes; 3

• Yes; 5

• No

What is the constant of proportionality for this table?

• $1/9 per hour

• $9 per hour

• $8 per hour

Write an equation for this relationship.

• y = 18x

• y = 18.50x

• y = 22.50x

• y = 22x

Identify the constant of proportionality.

• k = 2

• k = 3

• k = 1.50

• k = 2/3

• none (not proportional)

Which of the following statements is TRUE about the graph? Choose all that apply.

• The point (2, 8) shows that 8 pounds of cheese cost$2.00.

• The point (1.5, 6) shows the cost is $6.00 for 1.5pounds of cheese.

• The point (0.75, 3) shows that 0.75 pound of cheesecosts $3.00.

• The point (0.25, 1) shows the cost is $0.25 for 1pound of cheese.

• The point (0, 0) shows the cost is $0.00 for 0 pounds of cheese

What is the formula for constant of proportionality?

• y=mx+b

• k=y/x

• d=rt

• k=bh

What is the constant of proportionality?

• 3

• 4

• 2

• 5

What was Brian's unit rate?

• 3/2 word per minute

• 30 minutes per word

• 60 minutes per word

• 30 words per minute

Identify the constant of proportionality.

• k = 6

• k = 12

• k = 1/6

• k = 1/12

• none (not proportional)