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Transformations Rules
Rules of varios reflections and rotations
12
Mathematics
7th Grade
06/13/2011
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Term
Reflation over the y-axis
 Definition
(x, y)------>(-x, y)
Term
Reflection over x-axis
 Definition
(x,y)------->(x,-y)
Term
Reflection over the line y=x
 Definition
(x,y)------>(y,x)
Term
Just remember rotations are ALWAYS clockwise unless told other wise
 Definition
Term
90
 Definition
(x,y)------->(-y,x)
Term
180
 Definition
(x,y)-------->(-x,-y)
Term
270
 Definition
(x,y)------->(y,-x)
Term
360 or 0
 Definition
(x,y)----->(x,y)
Term
Dialation
 Definition
Shrinks or enlarges a figure to create a similar image. (Same angle measures and sides w/ a scale factor)
Term
Translation
 Definition
Slide movements
Term
Inverse Variation
 Definition
Non-linear relationships where one variable increases and the other decreases.
Term
Constant
 Definition

A # not multiplied by a variable (y-intercept)

y=3x+9
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