Transformations: Reflection

By: Yosep Rhe & Helen Yoo


A type of transformation that reflects,or "flips", a graph or figure across a line,called the line of reflection. A reflection is a type of isometry. An isometry (aka congruence transformation or rigid motions) is a transformation that doesn't change the shape or size of a figure.
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Rules of Reflection

Reflect over...

X-axis: (x,y) -> (x,-y)

Y-axis: (x,y) -> (-x,y)

Y=X: (x,y) -> (y,x)