Andrea has to find a third point, C', to form a triangle on the coordinate plane shown. She is told the coordinates of its reflection point, C', across the x-axis are (2,-2). What are the coordinates of point C?

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Answer 1

If the point C' is the reflection of point C across the x-axis, then the x-coordinate of C will remain the same, but the y-coordinate will have the opposite sign.

Since the coordinates of C' are (2, -2), the x-coordinate of C is also 2.

So the coordinates of point C are (2, 2).