Mathematics for IGCSE & O level - Proportion (Section 3 - No. 2)
When y varies inversely with x, what happens to y if x is multiplied by 3?
y is multiplied by 3
y is divided by 3
y is multiplied by 9
y is divided by 9
Giải thích
Since x and y are inversely proportional, if x increases, y decreases proportionally.