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.

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

What is the relationship between the two constants of proportionality?

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?

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

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.