IGCSE Maths / Graphs and transformations
Graph stretches
Edexcel International GCSE Maths (4MA1), chapter 26: Graphs and transformations, specification point 3.3b. Part of the full course.
Read the revision notes · IGCSE Maths past papers
A graph stretch changes the curve in one direction, either vertically or horizontally. The position of the number tells you which coordinate changes and helps you state the scale factor correctly.