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 ?
Since point C′ is the reflection of point C across the x-axis, the x-coordinate of point C remains the same, while the y-coordinate changes sign.
Therefore, the coordinates of point C are (2, 2).