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If y ∝ x and y = 16 when x = 4 find y when x = 6?
  1. 22
  2. 23
  3. 24
  4. None of these
Explanation

Since y ∝ x, we have y = kx for some constant k.

When x = 4, y = 16:  

16 = k × 4 → k = 4  

Now for x = 6:  

y = 4 × 6 = 24  


Last verified 13-05-2026

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