GCSE Maths Practice: graph-transformations

Question 3 of 10

This question tests vertical stretch of a function.

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\( \begin{array}{l}\text{Describe the transformation from } y = f(x) \\\text{to } y = 2f(x).\end{array} \)

Select all correct options:

\( \text{Graph is unchanged} \) \( \text{Stretch in y-direction by scale factor 2} \) \( \text{Graph is modified} \) \( \text{No transformation} \)

Check the coefficient in front of the function for vertical stretch.

Multiplying the function by a factor greater than 1 stretches it vertically, making all y-values larger.