Proportional Relationships Word Problems

What is the constant of proportionality for this table?

• 1/9

• 9

• 8

In the equation y = 14x, what is the constant of proportionality?

• y

• x

• 14

Find the unit rate of 624 calories in 3 servings.

• 1,872 calories per serving

• 208 calories per serving

• 624 calories per serving

• 621 calories per serving

Which of the following is the correct formula for finding the constant of proportionality?

• k = x/y

• k = y/x

• y = k/x

• x = k/y

A recipe calls for 3 cups of flour for every 4 cups of sugar. If you want to make a half batch, how many cups of sugar do you need?

• 2 cups

• 3 cups

• 4 cups

• 6 cups

• 8

• 12

• 16

• 20

A recipe calls for 3 cups of flour for every 4 cups of sugar. If you want to use 6 cups of sugar, how many cups of flour do you need?

• 4.5

• 5

• 4

• 4.5

A survey in a school found that 60 students own a bicycle. If this represents 30% of all students, how many students are in the school?

• 180

• 200

• 220

• 240

What is the constant of proportionality for the table above?

• 2

• 1/2

• 3

• None of the above

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