If y ∝ x and y = 10 when x = 2 find y when x = 7?
- 25
- 35
- 45
- None of these
Explanation
y ∝ x means y = kx
Find k: 10 = k(2) → k = 5
So y = 5x
When x = 7: y = 5(7) = 35
Last verified on 08-05-2026
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