Mathematics for IGCSE & O level - Transformations (Section 1 - No. 9)
What is the effect on an object when reflected over the y-axis?
The x-coordinate remains the same, and the y-coordinate changes sign.
The y-coordinate remains the same, and the x-coordinate changes sign.
Both x and y coordinates change sign.
The object rotates 90 degrees.
Explanation
Reflection over the y-axis changes the sign of the x-coordinate.
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