Mathematics for IGCSE & O level - Proportion (Section 2 - No. 14)
In the formula *y* = *kx*n, if *y* is inversely proportional to *x*3, what is the value of *n*?
-3
-1
1
3
Explanation
If y is inversely proportional to x^3, it means y = k/x^3 or y = kx^-3. Thus n = -3
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