A gardener is mixing plant food by combining nitrogen (x x\,x g) and potash (y y\,y g) in the ratio 9:109:109:10.
a.[2]
Use this information to draw a graph showing the relationship between the amount of nitrogen and the amount of potash used.
b.[2]
The gardener decides to use 55 g of potash. Use your graph to work out how much nitrogen he should use.
Writing a Ratio as a Fraction or Linear Function Questions
Practise Edexcel GCSE Maths Writing a Ratio as a Fraction or Linear Function with exam-style questions for Foundation and Higher tier. 60 questions, matched to the Edexcel GCSE Maths (1MA1) specification and written in Paper 1, Paper 2 and Paper 3 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.