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Transformation Algebraic Rules
Algebraic Rules for Transformations
13
Mathematics
10th Grade
01/27/2014
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Term
Translation
 Definition
(x,y) --> (x+h, y+k)
where h is horizontal movements and k is vertical movements
Term
Reflection over the x-axis
 Definition
(x,y) --> (x, -y)
Term
Reflection over the y-axis
 Definition
(x,y) --> (-x, y)
Term
Reflection over the y = x
 Definition
(x,y) --> (y, x)
Term
Reflection over the y = -x
 Definition
(x,y) --> (-y, -x)
Term
Rotation 90º CCW
 Definition
(x,y) --> (-y, x)
Term
Rotation 180º
 Definition
(x,y) --> (-x, -y)
Term
Rotation 270º CCW
 Definition
(x,y) --> (y, -x)
Term
Pre-image
 Definition
Figure that you start with
Term
Image
 Definition
Figure after a transformation. Has prime notation (A')
Term
Define Translation
 Definition
A slide
Term
Define Rotation
 Definition
A spin or turn about the origin
Term
Define Reflection
 Definition
A flip over a line of symmetry
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