Direct proportion – Medium

Last updated: 24/08/2021
GCSE Maths – Foundation Direct proportion Direct proportion – Medium
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  1. x ∝ y², when x = 20, y = 5. Express this relationship using an equation.

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  2. x ∝ y², when x = 15, y = 5. Express this relationship using an equation.

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  3. x ∝ y², when x = 45, y = 5. Express this relationship using an equation.

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  4. x ∝ y², when x = 28, y = 4. Express this relationship using an equation.

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  5. x ∝ y², when x = 27, y = 3. Express this relationship using an equation.

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  6. x ∝ y³, when x = 48, y = 4. Express this relationship using an equation.

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  7. x ∝ y³, when x = 384, y = 8. Express this relationship using an equation.

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  8. x ∝ y, when x = 3, y = 4. Express this relationship using an equation.

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  9. x ∝ y², when x = 8, y = 2. Express this relationship using an equation.

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  10. x ∝ y, when x = 6, y = 2. Express this relationship using an equation.

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  11. x ∝ y², when x = 35, y = 5. Express this relationship using an equation.

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  12. x ∝ y, when x = 4, y = 8. Express this relationship using an equation.

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  13. x ∝ y², when x = 10, y = 5. Express this relationship using an equation.

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  14. x ∝ y, when x = 9, y = 4. Express this relationship using an equation.

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  15. x ∝ y³, when x = 100, y = 5. Express this relationship using an equation.

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  16. x ∝ y³, when x = 108, y = 6. Express this relationship using an equation.

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  17. x ∝ y³, when x = 144, y = 4. Express this relationship using an equation.

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  18. x ∝ y³, when x = 75, y = 5. Express this relationship using an equation.

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  19. x ∝ y², when x = 8, y = 4. Express this relationship using an equation.

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  20. x ∝ y², when x = 18, y = 3. Express this relationship using an equation.

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  21. x ∝ √y, when x = 8, y = 16. Express this relationship using an equation.

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  22. x ∝ y³, when x = 175, y = 5. Express this relationship using an equation.

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  23. x ∝ √y, when x = 2, y = 16. Express this relationship using an equation.

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  24. x ∝ y³, when x = 112, y = 4. Express this relationship using an equation.

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  25. x ∝ √y, when x = 6, y = 16. Express this relationship using an equation.

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