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What is a reflection across the x-axis?

Understand the Problem

The question is asking for an explanation of what a reflection across the x-axis means in mathematics, particularly in geometry. This typically involves the transformation of points in a coordinate system where the y-coordinates of the points change sign.

Answer

(x, -y)

The reflection across the x-axis changes the y-coordinate to its opposite while keeping the x-coordinate unchanged.

Answer for screen readers

The reflection across the x-axis changes the y-coordinate to its opposite while keeping the x-coordinate unchanged.

More Information

Reflecting a point across the x-axis flips it over the x-axis, creating a mirror image.

Tips

A common mistake is changing the x-coordinate instead of the y-coordinate. Always remember to keep the x-coordinate the same.

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