7.RP.2 Reteach

Kimora goes for a walk and travels 0.75 of a mile in 0.20 hour.

Select THREE statements below that are true about the unit rate for Kimora's walk.

• Kimora's unit rate is equal to 0.75 ÷ 0.20

  
  

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• Kimora will average 3.75 miles per hour.

• Kimora will average 0.26 miles per hour.

• Kimora will walk less than 4 miles per hour because she walks less than 1 mile in 0.20 hour.

• Kimora travels less than a mile each 0.20 hour, so she will average about 1.5 miles per hour

Mattress Wonderland sells their mattresses for the following amounts to stores:

20 Mattresses for $2900

60 Mattresses for $8700

Which of the following statements about the price of the mattresses are true if the price remains proportional to the number of mattresses? Select TWO that apply.

• 12 mattresses cost $1450

• 42 mattresses cost $5800

• 50 mattresses cost $7250

• 66 mattresses cost $11600

• 100 mattresses cost $14,500

Which of the following represents a proportional relationship between x and y?

• A

• B

• C

• D

The table follows the rule y = kx, where k is the constant of proportionality.

What is the value of k?

• 5

• 12

• 50

• 30

Mya uses 

 $2\ \frac{1}{4}$  cups of sugar for every 3 gallons of Kool-aid she makes. How much sugar would Mya use is she made 19 gallons of Kool-aid

• 14 cups

• 14.25 cups

• 14.50 cups

• 14.75 cups

Montra is hiking. The graph below shows the distance Montra has walked.

Write an equation to represent the distance traveled in relationship to the hours he hikes. Let d represent the distance he goes, and let h represent the number of hours he hikes.

• d = 5h

• d = 6.5h

• d = 1.2h

• d = 10h

The graph shows the number laps around a track and time passed in minutes.

Select THREE of the statements which are correct.

• It takes 1 minutes and 15 seconds to complete 1 lap

• The coordinate point (3,2) on the graph represents that 3 laps can be run in 2 minutes

• Point (0, 0) on the graph means no time has passed, so no laps were completed.

• As time goes on the runner increases their speed.

• If 9 minutes have passed, the 6 laps have been completed.

A proportional relationship is shown in the graph.

What does the point (10,12) indicate in terms of the context?

• 10 miles have been hiked in 12 minutes

• 12 miles have been hiked in 10 minutes

What is the importance of y when x = 1?

• When x = 1 y is going to be a Variable

• When x = 1 y is the Independent and Dependent number

• When x = 1 y is Proportional

• When x = 1 y is the Constant of Proportionality.