Which of the following is the reflection, on a coordinate system, across the x-axis, for the triangle with points: (2,1), (4,1), and (4,3).
?
A. ?(2,-1), (4,-1), (4,-3)
B. ?(2,1), (4,1), (4,-3)
C. ?(-2,1), (-4,1), (-4,3)
D. ?(-2,-1), (-4,-1), (-4,-3)
E. ?None of the above.
Answer: A
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