Proportional Relationships

Front

What is a proportional relationship?

Back

A proportional relationship is a relationship between two quantities where the ratio of one quantity to the other quantity is constant.

Tags

CCSS.7.RP.A.2A

Front

If James earns $66 for tutoring 3 hours, how much does he earn per hour?

Back

$22 per hour.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

How do you find the total amount earned in a proportional relationship?

Back

Multiply the rate of earning by the number of hours worked.

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CCSS.7.EE.B.3

Front

What is the formula for a proportional relationship?

Back

y = kx, where k is the constant of proportionality.

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CCSS.7.RP.A.2C

Front

If there are 70 girls in the 7th grade and the ratio of boys to girls is 3:5, how many boys are there?

Back

42 boys.

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CCSS.6.RP.A.3B

Front

What does it mean for two ratios to be equal?

Back

It means that they represent the same relationship or proportion.

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CCSS.6.RP.A.3A

Front

If Inessa runs 3 laps in 10 minutes, how long will it take her to run 5 laps?

Back

16 2/3 minutes.

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CCSS.6.RP.A.3B

Front

What is the constant of proportionality in the equation m = 22d?

Back

22 is the constant of proportionality.

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CCSS.7.RP.A.2B

Front

How can you determine if two ratios form a proportion?

Back

Cross-multiply and check if the products are equal.

Tags

CCSS.7.RP.A.2A

Front

What is an example of a proportional relationship in real life?

Back

The relationship between distance and time when driving at a constant speed.

Tags

CCSS.7.RP.A.2A