2-6: Apply Proportional Reasoning to Solve Problems Part2

A proportional relationship is

• when two proportions like each other.

• a relationship between equivalent ratios with a constant multiple.

• a ratio that can be multiplied.

• when you add a number to both sides of a ratio.

Tags

CCSS.7.RP.A.2A

How can you change two quantities (numbers) so that they stay in the same proportional relationship?

• You can add the same number to each quantity.

• You can multiply both quantities by the same number.

• You can add different numbers to each quantity.

• You can multiply both quantities by different numbers.

Tags

CCSS.6.RP.A.1

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The weights of Michael's and Brittney's new puppies are shown in the table and graph. Whose dog gains weight more quickly?

• 
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CCSS.7.RP.A.2D

Can you use proportional reasoning to solve the following problem?

Marco needs to buy some cat food. At the nearest store, 3 bags of cat food cost $15.75. How much would Marco spend on 5 bags of cat food?

• Yes, because each bag of cat food costs the same, so there is a constant multiple.

• No, because there is no proportional relationship between the cost of bags of cat food.

Tags

CCSS.6.RP.A.1

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Can you use proportional reasoning to solve the following problem?

If Hector is 8 years old and Mary is 3 years old, how old will Mary be when Hector is 16?

• Yes, because Hector's age and Mary's age have a proportional relationship.

• No, because there is no constant multiple, so there is no proportional relationship.

Tags

CCSS.7.RP.A.2A