AP Precalculuseasymcq1 pt
Which matrix represents reflection across the x-axis?
A.[[1, 0], [0, −1]]
B.[[−1, 0], [0, 1]]
C.[[0, 1], [1, 0]]
D.[[1, 0], [0, 1]]
Explanation
Core Concept
It negates the y-coordinate.
Correct Answer
A[[1, 0], [0, −1]]
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