Question 470878
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Hi,
A circle has it's center at (2,-1) and one end of the diameter at (5,1).
(5,1)
(2,-1)  m = 2/3  y=(2/3)x+ b  -1=4/3+b  b =-7/3  y = (2/3)x - 7/3  Green
Slope of the Line containing the Diameter is m = 2/3
  y increases/decreases by 2, x increases/decreases by 3
other end of diameter is (-1,-3) down 2 and back 3 from center Pt(2,-1)
{{{drawing(300,300,   -6, 6, -6, 6,  grid(1),
circle(2, -1,3.6),
circle(5, 1,0.3),
circle(-1, -3,0.3),
circle(2, -1,0.3),

graph( 300, 300, -6, 6, -6, 6,0,(2/3)x -7/3))}}}