x x\,x is directly proportional to the cube of y y\,y
When x=40x = 40x=40, y=0.2y = 0.2y=0.2
Find the value of y y\,y when x=135x = 135x=135
164 exam-style questions on Eduqas GCSE Maths Direct and Inverse Proportion. Each one has a worked solution and a mark scheme showing where the marks go.