y y\,y is inversely proportional to x x\,x
When y=15y = 15y=15, x=4x = 4x=4
Verify that the value of y y\,y when x=12x = 12x=12 is 5
164 exam-style questions on OCR GCSE Maths Direct and Inverse Proportion. Each one has a worked solution and a mark scheme showing where the marks go.