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Question
The reflection point of A(2, 5) about X = 0 is (k, m). The value of k+m is ___.
The reflection point of A(2, 5) about X = 0 is (k, m). The value of k+m is ___.
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Solution
The correct option is A 3
Reflection about X = 0,
Y - coordinate remain same.
X - coordinate change sign.
The reflection point of A(2, 5) about X = 0 => (-2, 5).
Therefore, k = -2 and m = 5.
k + m = 3
Reflection about X = 0,
Y - coordinate remain same.
X - coordinate change sign.
The reflection point of A(2, 5) about X = 0 => (-2, 5).
Therefore, k = -2 and m = 5.
k + m = 3
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