The coordinates of a point and its image after a reflection are given. Identify the line of reflection.
$(- 1, - 3) \to (1, - 3)$

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Solution

Check the line of reflection.
Given, coordinates of reflection of a point
$(- 1, - 3) \to (1, - 3)$
From the given coordinates, we can observe:
The $y -$ coordinate of both points and its image are the same but the $x -$ coordinate of the image is the opposite in sign as of its points.
Hence, $y -$ axis is the line of reflection.

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