a a\,a is directly proportional to b b\,b
When a=7,b=28a = 7, b = 28a=7,b=28
Find the value of b b\,b when a=5a = 5a=5
10 exam-style questions on Oxford AQA IGCSE Maths Direct and Inverse Proportion. Each one has a worked solution and a mark scheme showing where the marks go.