Grade 7 | Unit 2 | Lesson 3: More about Constant of Proportionality | Practice Problems

Complete the table to predict how long it would take Noah to run different distances at 6 miles per hour.

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CCSS.6.RP.A.3B

One kilometer is 1000 meters. Complete the tables. What is the interpretation of the constant of proportionality in each case?

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CCSS.7.RP.A.2D

What is the relationship between the two constants of proportionality?

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CCSS.7.RP.A.2D

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CCSS.7.RP.A.2B

The area of the Mojave desert is 25,000 square miles. A scale drawing of the Mojave desert has an area of 10 square inches. What is the scale of the map?

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CCSS.7.RP.A.2C

Which of these scales is equivalent to the scale 1 cm to 5 km? Select all that apply.

• A: 3 cm to 15 km

• B: 1 mm to 150 km

• C: 5 cm to 1 km

• D: 5 mm to 2.5 km

• E: 1 mm to 500 m

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CCSS.7.RP.A.2C

Which one of these pictures is not like the others? Explain what makes it different using ratios. Description: Three ovals, L, M and N on a grid. Each oval has a smaller oval with the same height inside. At each oval’s widest point, oval L has width 5 units outside, width 3 units inside and height 4. Oval M has width 10 units outside, width 4 units inside and height 8. Oval N has width 15 units outside, width 9 units inside and height 12.

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CCSS.6.RP.A.3A