x x\,x is inversely proportional to the square root of y y\,y
When x=12,y=9x = 12, y = 9x=12,y=9
Find the value of x x\,x when y=81y = 81y=81
Practise Oxford AQA IGCSE Maths Direct and Inverse Proportion with exam-style questions for Core and Extended tier. 22 questions, matched to the Oxford AQA IGCSE Maths (9260) specification and written in Paper 1 and Paper 2 (Core: 1C and 2C; Extension: 1E and 2E) style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.