x x\,x is inversely proportional to the square root of y y\,y
When x=18x = 18x=18, y=4y = 4y=4
Find the value of x x\,x when y=144y = 144y=144
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.