Review Proportional Relationships

Which of these is a unit rate that matches the proportional relationship represented by this graph?

• 60 miles/1 hour

• 60 hours/1 mile

• 1 mile/1 hour

• 1 hour/60 miles

What is the constant of proportionality for this table? 

• k = 0

• y = 25x

• k = 25

• x = 25y

What is the constant of proportionality (in miles per hour) based on the table?

• 45 mph

• 90 mph

• 135 mph

• 2 mph

Susan went to a store where you can scoop your own ice cream and buy as much as you want. She bought 5 gallons of strawberry ice cream for $17.50. How much did she pay per gallon?

• $3.50 per gallon

• $3.00 per gallon

• $2.50 per gallon

• $5.50 per gallon

A you-pick blueberry farm offers 6 lbs of blueberries for $16.50. Write the equation for cost per pound.

• p = 2.75c

• c = 99c

• c = 2.75p

There are 3 cans that store 9 tennis balls. Write an equation for balls per can.

• x = 27y

• y = 9x

• y = 3x

• x = 3y

In 25 minutes Li can run 10 laps around the track. Write an equation for the number of laps she can run per minute.

• y = 5x

• y = 2x

• y = 2/5 x

• y = 5/2 x

Bananas are sold $1.77 for 3 pounds. Write an equation for the cost per pound.

• c = 0.59p

• c = 1.69p

• p = 0.59c

• c = 3p

Use the equation y = 9x. If John made $189, how many hours did he work

• 20 hours

• 21 hours

• 32 hours

• 9 hours

What is the constant of proportional?

• 10

• 2

• 5.5

• 5