Transformation Rules Sheet Line Reflections:

rx−axis ( x, y ) = ( x, − y ) ry −axis ( x, y ) = (− x, y ) ry = x ( x, y ) = ( y, x) ry =− x ( x, y ) = (− y, − x)

Point Reflection:

R180º ( x, y ) = (− x, − y )

Rotations:

R90º ( x, y ) = (− y, x) R180º ( x, y ) = (− x, − y ) R270º ( x, y ) = ( y, − x) R−90º ( x, y ) = ( y, − x)

Translation:

Ta ,b ( x, y ) = ( x + a, y + b)

Dilation:

Dk ( x, y ) = (kx, ky )

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