GCSE Maths (Edexcel)

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Algebra Graphs

Horizontal Graph Reflections

4:23 Graph Reflections
Spec A13
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  • The graph of the function f of minus x is a reflection of the graph of f of x in the y-axis.
  • Every point in the original graph is the same distance from the mirror line as the corresponding point in the reflection.
  • The new graph, f of minus x, has the equation y equals f of minus x.
  • To find the equation of the reflected graph, replace x with minus x in the original function.
  • The equation of the reflected graph is y equals 2x squared minus x cubed.

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