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
Объяснение
Inversely proportional means that if one variable doubles, the other halves.