Which glide reflection describes the mapping mc119-2.jpgABC mc119-3.jpg mc119-4.

Mathematics
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Which glide reflection describes the mapping ΔABC ->ΔDEF?

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A.(x, y)  (x – 1, y + 3) and reflected across y = -3

B.(x, y)  (x – 4, y – 1) and reflected across y = 0

C.(x, y)  (x – 1, y + 3) and reflected across x = -3

D.(x, y)  (x – 4, y – 1) and reflected across x = 0

May 1st, 2015

You have to move triangle ABC left 4 units (x-4) and down one (y-1).  Then it is reflected across the x-axis (y=0);   That is choice B

Hope that helps!

May 1st, 2015

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