Open Up - Grade 7 - Mathematics - Unit 2 - Lesson 4

On a flight from New York to London, an airplane travels at a constant speed. An equation relating the distance traveled in miles,d , to the number of hours flying,t , is t =\frac{1}{500}d. How long will it take the airplane to travel 800 miles?

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7.RP.2.c

5.NBT.7

Each table represents a proportional relationship. For each, find the constant of proportionality, and write an equation that represents the relationship. Constant of proportionality:Equation: P =

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7.RP.2.c

5.NBT.7

Each table represents a proportional relationship. For each, find the constant of proportionality, and write an equation that represents the relationship. Constant of proportionality:Equation: C =

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7.RP.2.c

5.NBT.7

A map of Colorado says that the scale is 1 inch to 20 miles or 1 to 1,267,200. Are these two ways of reporting the scale the same?

• Yes, they are similiar.
• No, they are not similiar.

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7.RP.2.c

5.NBT.7

Here is a polygon on a grid. Draw a scaled copy of the polygon using a scale factor of 3. Label the copy A.(show your work)Draw a scaled copy of the polygon with a scale factor . Label it B.(show your work)Is Polygon A a scaled copy of Polygon B? If so, what is the scale factor that takes B to A? (short answer)

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7.RP.2.c

5.NBT.7