Proportional Relationships Quiz

Grade 7 · Math · Quiz

Ten questions to check your understanding of proportional relationships, constants of proportionality, and y = kx.

Questions

1. Which equation represents a proportional relationship?

   1. y = 2x + 3
   2. y = 4x
   3. y = x²
   4. y = 5
   Show answer

   Answer: y = 4x

2. A proportional relationship graph always passes through (0, 0).

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   Answer: True

3. A store sells 3 pounds of grapes for $4.50. What is the unit rate per pound?

   1. $1.00
   2. $1.25
   3. $1.50
   4. $2.00
   Show answer

   Answer: $1.50

4. The equation y = kx represents a proportional relationship where k is the constant of ___.

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   Answer: proportionality

5. A table shows x: 2, 4, 6 and y: 10, 20, 30. What is the constant of proportionality?

   1. 2
   2. 5
   3. 10
   4. 3
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   Answer: 5

6. The line y = 3x + 1 represents a proportional relationship.

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   Answer: False

7. If y = 7x, what is y when x = 9?

   1. 16
   2. 63
   3. 56
   4. 72
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   Answer: 63

8. If you double the x-value in a proportional relationship, the y-value also doubles.

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   Answer: True

9. A recipe uses 2 eggs for every 3 cups of flour. How many eggs are needed for 12 cups of flour?

   1. 6
   2. 8
   3. 10
   4. 18
   Show answer

   Answer: 8

10. To find the constant of proportionality from a table, divide each ___ value by its corresponding x value.

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    Answer: y

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