What are the coordinates of the reflection image of A after both reflections?

Mathematics
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ΔABC is reflected across x = 1 and y = -3. What are the coordinates of the reflection image of A after both reflections?

a.  (7, -2)

b.  (7, 2)

c.  (-2, -7)

d.  (-2, 7)

May 6th, 2015

Across x = 1 :  A(-5,-4) becomes A'(7,-4)

Across y = -3:  A'(7,-4) becomes A"(7,-2)  choice a.

May 6th, 2015

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