Answer:
see explanation
Step-by-step explanation:
Under a reflection in the x- axis
a point (x, y ) → (x, - y )
The rule is (x, y) ⇒ (x, -y)
Transformation is the movement of point from its initial location to a new location. Type of transformation include translation, dilation, reflection and rotation. If a figure is transformed, all its points are also transformed.
Reflection is the flipping of a figure. If a point A(x, y) is reflected across the x axis, the new point is A'(x, -y) i.e. its x coordinate remains the same and the y coordinate changes.
Hence the rule that describes the transformation across the x axis is:
(x, y) ⇒ (x, -y)
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