Proportional Relationship Test Corrections

What is the constant of proportionality?

• $3
• $4
• $2
• $9

Jane wants to triple her lemonade recipe. For two drinks, she mixes 3 lemons with 2 cups of water. What will she need to triple her recipe?

• 6 lemons, 4 cups of water

• 8 lemons, 6 cups of water

• 9 lemons, 6 cups of water

• 12 lemons, 8 cups of water

Concrete building blocks weigh 28 pounds each. If x represents the number of concrete blocks and y represents the weight, what equation relates the two variables?

• y=28/x

• x=28y

• y=28x

• 28xy

Sherry can buy 4 pounds of oranges for $18.  Write the equation to represent the cost, y, for x oranges.

• y = 4.5x
• y = 72x
• y = 2/9 x
• y = 4x

You spend $40 on 5 pounds of concrete. What is the unit rate in dollars per pound?

• $8 per pound
• $5 per pound
• $35 per pound
• 0.125 pounds per dollar

• 2
• 12
• 108
• 18

What is the missing value of x?

• 9

• 11

• 10

• 99

Water flows from a faucet at a rate of 5 gallons every 25 seconds. At this rate, how many gallons will flow from the faucet in 45 seconds?

• 9 gallons
• 5 gallons
• 11 gallons
• 40 gallons

In September, a clothing store had a sale where you could get 5 scarves for $28.35. In October, the price was changed to 7 scarves for $40.39. In which month did a scarf cost the most?

• September

• October

Craig earns extra money as a lifeguard. He earns $37 for 4 hours and $64.75 for 7 hours.  What is the constant of proportionality (how much did he make per hour)?

• $37
• $64.75
• $9.25
• $18.50