e e\,e is directly proportional to f f\,f
When e=4,f=30e = 4, f = 30e=4,f=30
Find the exact value of f f\,f when e=6e = 6e=6
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.