An baker makes bread using the ratio of flour (y y\,y cups) to water (x x\,x cups) of 5:3.
Use this information to draw a graph showing the relationship between the amount of flour and the amount water used to make bread.

The baker is going to use 30 cups of flour. Use your graph to work out how much water the baker should use.
60 exam-style questions on AQA GCSE Maths Writing a Ratio as a Fraction or Linear Function. Each one has a worked solution and a mark scheme showing where the marks go.