Mathematics
The reflection of the point P(1, -2) in the line y = -1 is
(-3, -2)
(1, -4)
(1, 4)
(1, 0)
Reflection
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Answer
We know that the reflection of the point (x, y) in the line y = a is the point (x, -y + 2a).
∴ The image of the point P(1, -2) under reflection in the line y = -1 is the point (1, -(-2) + 2 × (-1)) i.e the point (1, 0).
Hence, Option 4 is the correct option.
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