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Question
The point P(x, y) is first reflected in the x-axis and reflected in the origin to P’. If P’ has co-ordinates (–8, 5); evaluate x and y.
Solution
Mx (x, y) = (x, –y)
MO (x, –y) = (–x, y)
Thus, we get the co-ordinates of the point P’ as (–x, y). It is given that the co-ordinates of P’ are (–8, 5).
On comparing the two points, we get, x = 8 and y = 5
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