GEOMETRY

The diameter of a circle has endpoints P(–10, –2) and Q(4, 6).
a.Find the center of the circle.
c.Write an equation for the circle.

1. The centre must be the midpoint of PQ
which would be C( (-10+4)/2 , (-2+6)/2 )
= C(-3,2)

radius is √( (4+3)^2 + (2-6)^2) = √65

equation:
(x+3)^2 + (y-2)^2 = 65

posted by Reiny
2. Length of the diameter of a circle with the endpoints A(4, -3) and B(4, 3)

posted by anne
3. -6, -2 2, 4

posted by Anonymous

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