GCSE Maths Practice: graph-transformations

Question 2 of 10

This question practices reflection in the x-axis. Identify how y-values are flipped.

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

Choose one option:

\( \text{Translation 3 units down} \) \( \text{Reflection in x-axis} \) \( \text{Stretch in y-direction by scale factor 2} \)

Look for negative signs in front of the function. Positive y-values become negative.

Reflecting a function over the x-axis changes the sign of all y-values. This is a key graph transformation.