Here is a number machine.
Input → ×3\times 3×3 → -6 → Output
a.[1]
What is the output when the input is 4?
b.[1]
What is the input when the output is 15?
c.[2]
Show that there is a value of the input for which the input and the output have the same value.
Function Machines Questions
Practise AQA GCSE Maths Function Machines with exam-style questions for Foundation and Higher tier. 39 questions, matched to the AQA GCSE Maths (8300) 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.