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Mathematics for IGCSE & O level - Transformations (Section 4 - No. 11)
What is the effect of a reflection across the x-axis on a point (x, y)?
(x, -y)
(-x, y)
(-x, -y)
(y, x)
Forklaring
Reflection over x-axis: (x, y) -> (x, -y).
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