x x\,x is directly proportional to the cube of y y\,y
When x=16x = 16x=16, y=0.2y = 0.2y=0.2
Find the value of y y\,y when x=128x = 128x=128
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.