7th Grade Unit 3 Proportional Relationships Quiz Prep

The variables x and y are proportional to one another. When x is equal to 33, the value of y is 11. Which of the following equations gives the relationship between x and y?

• y = 3x

• y=x+22

• y=x-22

Mary has been walking dogs in her neighborhood. Using the information in the table below, which of the following represents the total amount Mary earned for walking 15 dogs?

• $225

• $255

• $262

• $268

A box of writing utensils contains 8 pens and 16 markers. Which of the following is not a correct way to represents the ratio of these two quantities?

• 1 pen per 2 markers

• 2 pens per 1 marker

• 2 markers per 1 pen

• 4 markers per 2 pens

The number of calories, c, in a handful of cheesy crackers is proportional to the number of crackers, n. If there are 150 calories in 27 crackers, which of the following expressions would give the number of calories in 20 crackers?

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At Mav's first birthday party, the ratio of adults to children was 5 to 2. There were 6 children at the party. (a) Determine the number of adults at the party.

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