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 store sells apples at a ratio of 5 apples for every $2. How much will 15 apples cost?

Question 2 of 3

A bakery makes chocolate chip cookies and oatmeal cookies in the ratio 3:5. If they make 24 chocolate chip cookies, how many oatmeal cookies do they make?

Question 3 of 3

A sports club has a ratio of volleyball players to tennis players of 4:6. If there are 24 volleyball players, how many tennis players are there?

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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