Answer:
(-2, -5)
Explanation:
You want the coordinates of the image of point P(-2, 7) after it is reflected over the line y = 1.
Reflection
Reflection over the line y=a gives the transformation ...
(x, y) ⇒ (x, 2a-y)
Application
When a=1, the transformation is ...
(x, y) ⇒ (x, 2-y)
P(-2, 7) ⇒ P'(-2, 2-7) = P'(-2, -5)
The coordinates of the reflected point are (x, y) = (-2, -5).
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