Grade 8 · Math
Reflect a point across the x-axis
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Reflect the point (-3, -7) across the x-axis. What are the image coordinates?
- (-3, 7)
- (3, 7)
- (-7, -3)
- (3, -7)
See the answer & why
(-3, 7)
The horizontal coordinate stays -3. The vertical coordinate changes from -7 to 7, so the image is (-3, 7).
A little hint: A reflection across the x-axis keeps x and changes the sign of y.
Locate the original point and note its horizontal and vertical coordinates.
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