4. The circle C
.
has centre A(3, 5)
.
passes through the point B(8,-7)
(a) Find an equation for C.
314
The points M and N lie on C such that MN is a chord of C.
Given that MN
lies above the x-axis
is parallel to the x-axis
has length 4√22
2
find an equation for the line passing through points M and N.
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