The centre must be the midpoint of AB, which is
( (5+1)/2 , (4+4)/2) or (3,4)
so the equation must be (x-3)^2 + (y-4)^2 = r^2
plug in one of the given points to find r^2 and you are done.
Find the equation of the circle whose diameter has the end point A(5,4) and B(1,4).
1 answer