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

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##### Intros

###### Lessons

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

Sketch and compare: $y = {\left( {x - 4} \right)^3}$ VS. $- y = {\left( {x - 4} \right)^3}$- Sketch both quadratic 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 ___________________.