Question 636106
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Hi,
Write the equation of a circle in which the endpoints of the diameter are at 
(-2,-3) and at 
(4,5)  D = {{{sqrt((-6)^2 + (-8)^2) = sqrt(100) = 10}}}  r = 5
       M = (2/2, 2/2) = (1,1) the center
{{{(x-1)^2 + (y-1)^2 = 5^2}}}

{{{drawing(300,300,   -6, 6, -6, 6,  grid(1),
circle(1, 1,0.2),
circle(1, 1,5),
circle(-2, -3,0.3),
circle(4, 5,0.3),
graph( 300, 300, -6, 6, -6, 6))}}}