Coordinate geometry › Circles in coordinates › Centre and radius

Center of a circle through three points

High school · ●●○○○ 20 pts

A circle passes through the points (−1,2)(-1, 2), (3,0)(3,0) and (9,0)(9,0). The center of the circle is at (h,k)(h,k). Find the value of h+kh+k.

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