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Geometric Transformation Rules

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
Rule for Reflection over x-axis   x stays the same, y changes signs (x, -y)  
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Rule for Reflection over y-axis   x changes signs, y stays the same (-x, y)  
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Rule for 90 degree counter-clockwise rotation   Reverse, then change the sign of the first (-y, x)  
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Rule for 90 degree clockwise rotation   Reverse, then change the sign of the 2nd (y, -x)  
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Rule for 180 rotation   Change both signs (-x, -y)  
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How do you find the scale factor (k)?   image/original  
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What does (x - 3, y + 2) mean?   Move the figure 3 left and 2 up  
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If k = 1.5 is the dilation a reduction or enlargement?   Enlargement  
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What changes in a translation? (location, orientation, or size)?   Location (moves to a new spot)  
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What changes in a reflection? (orientation, or size)?   Orientation (faces a different direction)  
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What changes in a dilation? (orientation, or size)?   Size (gets bigger or smaller)  
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How does a scale factor of 5 affect area?   Makes the area 25 times bigger (5 squared)  
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