y y\,y is inversely proportional to the cube of x x\,x
When y=16y = 16y=16, x=0.5x = 0.5x=0.5
Using y=kx3\displaystyle y = \frac{k}{x^3}y=x3k, find the value of kkk.
Hence find the value of y y\,y when x=1x = 1x=1
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.