Proportional relationships and the constant of proportionality

Recognize when two quantities are proportional from a table, graph, or equation and identify k in y = kx.

Standards:7.RP.A.2

Try it: three questions

Real questions from the practice bank. Tap an answer to check it.

Question 1 of 3

A baker makes 24 cookies in 3 hours. At this rate, how many cookies does she make per hour?

Question 2 of 3

A recipe uses 3 cups of flour for every 2 cups of sugar. If you want to use 9 cups of flour, how many cups of sugar do you need?

Question 3 of 3

A bakery sells cookies at a constant rate. If 3 boxes of cookies cost $12, how much will 8 boxes cost?

How this fits in

Proportional relationships and the constant of proportionality is one skill in the Ratios & Proportions unit. Students read the unit lesson, then earn a bronze, silver, or gold medal on their last 10 answers. Medals never go down. A mastered unit comes back for review after 1, 3, 7, 16, and 35 days so it stays learned.

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