Mathematics for IGCSE & O level - Proportion (Section 2 - No. 34)
Which of the following equations demonstrate inverse proportionality?
y = k/x
y = kx
xy = k
y = k/x^2
Paliwanag
Inverse proportionality can be expressed as y = k/x or xy = k. Also y = k/x^2 where x is the squared value.