Topic 2 Mid-Topic Assessment

How do you know if an equation represents a proportional relationship?

• If an equation can be written in the form y = k + x, then it shows a proportional relationship.

• If an equation can be written in the form y = k, then it shows a proportional relationship.

• If an equation can be written in the form y = kx, then it shows a proportional relationship.

Tags

CCSS.7.RP.A.2C

Maria rides her bicycle 3/4 mile in 5 minutes, or 1/12 hour, along the bike trail. Assuming she rides at a constant rate, what is her speed, in miles per hour?

• 9 miles per hour

• 36 miles per hour

• 4 miles per hour

Tags

CCSS.7.RP.A.1

There are 120 Calories in a 3/4 cup serving of cereal. How many Calories are in 6 cups of cereal?

• 360 Calories

• 960 Calories

• 480 Calories

Tags

CCSS.4.NF.B.4B

CCSS.4.NF.B.4C

Does the following information show a proportional relationship?

x: 3, 6, 9, 12

y: 12, 24, 45, 60

• Yes; 1/4

• Yes; 4

• Yes; 5

• The quantities are not proportional.

Tags

CCSS.7.RP.A.2A

At the local dairy farm, John buys a 32-oz container of yogurt for $2.56. Randy buys a 6-oz container of yogurt for $0.48. Are the cost, y, in dollars and the amount of yogurt, x, proportional? Explain. Write an equation to represent this relationship.

• Yes, because the ratios 2.56/0.48 and 6/32 are equivalent;

  y = 0.08x.

• Yes, because the ratios 2.56/32 and 0.48/6 are equivalent;

  y = 0.08x.

• Yes, because the ratios 2.56/32 and 0.48/6 are equivalent;

  y = 0.8x.

• No, because the ratios 2.56/32 and 0.48/6 are not equivalent; y = 0.08 + x.

Tags

CCSS.7.RP.A.2A

Kelly earns $36.80 for 4 hours of yardwork. Robert earns $50.40 for 6 hours of yardwork. Who earns more money per hour? How much more?

• Kelly; $0.60

• Kelly; $0.80

• Kelly; $1.00

• Robert; $0.60

• Robert; $0.80

Tags

CCSS.7.EE.B.3