6. Secants, Tangents, and Angle Measures
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Use the Midpoint Formula and the fact that AB is a diameter of the circle.
J
Let's draw the points A(-4,8) and B(6,2) and the segment joining them.
To find the coordinates of the center of the circle, we use the fact that since AB is a diameter, its midpoint must be the center of the circle.
Substitute ( -4,8) & ( 6,2)
In consequence, among the given options the correct one is option J.