IGCSE Maths / Graphs and transformations
Writing transformed functions algebraically
Edexcel International GCSE Maths (4MA1), chapter 26: Graphs and transformations, specification point 3.3c. Part of the full course.
Read the revision notes · IGCSE Maths past papers
To write a transformed function, work out whether the change acts on the function’s answer or replaces each input x. Expand and collect the result, then check it against the graph.