Mathematics for IGCSE & O level - Proportion (Section 3 - No. 9)
If 'y' varies inversely as 'x', what happens to 'y' if 'x' is doubled?
'y' doubles
'y' halves
'y' remains the same
'y' quadruples
Explication
Inversely proportional means that if one variable doubles, the other halves.