Home › CBSE Class 8 › Mathematics › Direct And Inverse Proportions › Doubling x in a direct proportion means y is:
Doubling x in a direct proportion means y is:
AUnchanged
BSquared
CDoubled
DHalved
Answer & Solution
Correct answer: C. Doubled
1. The ratio x by y must stay constant.
2. If x doubles, y must double to keep it so.
3. So y is doubled as well.
4. The answer is doubled.
_Source: NCERT Class 8 Mathematics, Ch 11 'Direct and Inverse Proportions'_
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