e e\,e is directly proportional to f f\,f
When e=4,f=48e = 4, f = 48e=4,f=48
Find the value of f f\,f when e=5e = 5e=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.