# Reflection across the y-axis: y = f(-x)

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##### Intros

###### Lessons

__An Experiment to Study "Reflection Across the Y-axis"__

Sketch and compare: $y = {\left( {x - 4} \right)^3}$ VS. $y = {\left( { - x - 4} \right)^3}$- Sketch both cubic functions on the same set of coordinate axes.
- Compared to the graph of $y = {\left( {x - 4} \right)^3}$:

• the graph of $y = {\left( { - x - 4} \right)^3}$ is a reflection in the ________________________.