Proportional vs. Non-Proportional Relationships Explained

What is the cost of three medium pizzas if each pizza costs $8?

• $32

• $24

• $16

• $40

What is the constant of proportionality in the pizza example?

• $10

• $9

• $8

• $7

If Andrew works for 3 hours, how much will he earn?

• $30

• $45

• $40

• $35

What is the unit rate of Andrew's earnings per hour?

• $15

• $12

• $10

• $18

How much does Uptown Tickets charge for one baseball game ticket including the processing fee?

• $17

• $14

• $10

• $7

Is the total cost of an order from Uptown Tickets proportional to the number of tickets ordered?

• No, because the unit rate varies

• Yes, because the unit rate is constant

• Yes, because the processing fee is fixed

• No, because the ticket price is fixed

What is the unit rate for 2 tickets from Uptown Tickets?

• $17

• $10

• $8.50

• $7

What is the constant of proportionality in the lemonade recipe example?

• 1.5

• 1

• 0.5

• 0.25

How many teaspoons of sugar are used for 4 cups of water in the lemonade recipe?

• 2.5

• 2

• 1.5

• 1

Is the relationship between teaspoons of sugar and cups of water in the lemonade recipe proportional?

• No, because the unit rate varies

• No, because the amount of sugar is fixed

• Yes, because the amount of water is fixed

• Yes, because the unit rate is constant