7.RP.2A Part A: Recognizing Proportional Relationshipsfrom Tables

NAME ______DATE______PERIOD ______

7.RP.2a Part A: Recognizing Proportional Relationshipsfrom Tables

For Exercises 1–2, use the table of values. Write the ratios in the tableto show the relationship between each set of values.

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2.

For Exercises 3–4 use the table of values. Write proportional or non-proportional.

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4.

5. The world’s fastest fish, a sailfish, swims at a rate of 69 milesper hour. Is the distance a sailfish swims proportional to the numberof hours it swims?

6. Fred is ordering pies for a family reunion. Each pie costs $4.50. For orderssmaller than a dozen pies, there is a $5 delivery charge. Is the cost proportionalto the number of pies ordered? Use a table of values to explain your reasoning.

Use a table to solve. Then explain your reasoning.

7. Fun Center rents popcorn machines for $20 per hour.In addition to the hourly charge, there is a rental fee of $32. Is thenumber of hours you rent the popcorn machine proportional tothe total cost?

The cost to hours ratio for 1, 2, 3, and 4 hours is = 52, = 36,  30.7, = 28. Since these ratios are not all equal, the total cost is not proportional to the numbe

of hours of renting the popcorn machine.

8. Mrs. Govin is making cakes for the school bake sale. Sheneeds 2 cups of sugar for every cake she makes. Is the numberof cakes Mrs. Govin makes proportional to the number of cupsof sugar?

9.MONEYAt the beginning of thesummer, Conan had $180 in the bank.Each week he deposits another $64 thathe earns mowing lawns. Is his accountbalance proportional to the number ofweeks since he started mowing lawns?or 2, and or 2. Since these ratios are all equal to 2, the number of cakes is proportional to the number of cups of sugar.