FreeMath
Grade 7medium

Proportional Relationships Practice

Practice with proportional relationships where y = kx. The constant of proportionality k is the ratio y/x. These relationships pass through the origin.

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All 20 Practice Problems

Every question in this set. Solve them on paper, or use the interactive tool above for instant feedback and hints.

  1. 1.y = 3x. When x = 5, y = ?
  2. 2.y = 2x. When x = 8, y = ?
  3. 3.y = 5x. When x = 7, y = ?
  4. 4.y = 4x. When x = 9, y = ?
  5. 5.y/x = 6. When x = 4, y = ?
  6. 6.y = 7x. When x = 3, y = ?
  7. 7.y/x = 8. When x = 5, y = ?
  8. 8.y = 1.5x. When x = 10, y = ?
  9. 9.y/x = 2.5. When x = 6, y = ?
  10. 10.y = 0.5x. When x = 20, y = ?
  11. 11.If (2, 6) is proportional, k = ?
  12. 12.If (4, 20) is proportional, k = ?
  13. 13.If (3, 12) is proportional, k = ?
  14. 14.If (5, 35) is proportional, k = ?
  15. 15.If (8, 24) is proportional, k = ?
  16. 16.y = 6x. When y = 42, x = ?
  17. 17.y = 4x. When y = 36, x = ?
  18. 18.y = 9x. When y = 63, x = ?
  19. 19.y = 5x. When y = 45, x = ?
  20. 20.y = 8x. When y = 56, x = ?
Show answer key
  1. 1.y = 3x. When x = 5, y = ? Answer: 15
  2. 2.y = 2x. When x = 8, y = ? Answer: 16
  3. 3.y = 5x. When x = 7, y = ? Answer: 35
  4. 4.y = 4x. When x = 9, y = ? Answer: 36
  5. 5.y/x = 6. When x = 4, y = ? Answer: 24
  6. 6.y = 7x. When x = 3, y = ? Answer: 21
  7. 7.y/x = 8. When x = 5, y = ? Answer: 40
  8. 8.y = 1.5x. When x = 10, y = ? Answer: 15
  9. 9.y/x = 2.5. When x = 6, y = ? Answer: 15
  10. 10.y = 0.5x. When x = 20, y = ? Answer: 10
  11. 11.If (2, 6) is proportional, k = ? Answer: 3
  12. 12.If (4, 20) is proportional, k = ? Answer: 5
  13. 13.If (3, 12) is proportional, k = ? Answer: 4
  14. 14.If (5, 35) is proportional, k = ? Answer: 7
  15. 15.If (8, 24) is proportional, k = ? Answer: 3
  16. 16.y = 6x. When y = 42, x = ? Answer: 7
  17. 17.y = 4x. When y = 36, x = ? Answer: 9
  18. 18.y = 9x. When y = 63, x = ? Answer: 7
  19. 19.y = 5x. When y = 45, x = ? Answer: 9
  20. 20.y = 8x. When y = 56, x = ? Answer: 7

About This Practice

This practice set includes 20 proportional relationship problems. Understanding proportionality is foundational for linear functions and real-world applications.

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