Last updated: October 22, 2026 · Written by the Math Made Easy math teachers
Looking for a proportional equations quiz? Then this Grade 7 quiz on Writing and Using y = kx Equations asks 10 multiple-choice questions with instant feedback. These ten questions check how to write y = kx from tables, graphs and word problems, how to find missing values with the equation, and how to compare rates. Choose an answer, then read the explanation to learn what mistake each wrong choice reflects.
Standards: 7.RP.A.2c · Level: Grade 7
What this Writing and Using y = kx Equations quiz checks
- The equation y = kx models every proportional relationship.
- Find k by dividing y by x for any pair in the table, or read it at x = 1 on the graph.
- To find a missing y, multiply by k; to find a missing x, divide by k.
- In a store, total cost t = pn, with price p per item and n items.
- Compare relationships by comparing their constants of proportionality.
The 10 questions of the quiz
- Which equation matches the table?
- Which equation matches the graph?
- Notebooks cost $2.85 each. Which equation gives the total cost t of n notebooks?
- In the equation y = 6x, what is y when x = 1/2?
- The equation y = (2/5)x describes a relationship. What is x when y = 18?
- Only one of these equations has the form y = kx. Which one?
- Ali earns c = 8.25h dollars for h hours. Bea earns $35 for 4 hours at a constant rate. Who earns more per hour?
- A train’s distance is d = 48t, with d in miles and t in hours. What does 48 mean?
- The point (6, 39) lies on the graph of y = kx. What is k?
- A state sales tax is 7%. Which equation gives the tax t on a price p?
After the quiz
Missed a question? Reread the Writing and Using y = kx Equations lesson, then take the quiz again. Next, solve the Grade 7 worksheet on Writing and Using y = kx Equations, one star first, then two and three stars. Finally, take the chapter test under real conditions, without notes and with a timer.
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