Write the standard form of the equation of the circle with endpoints of a diameter at the points (1,6) and (-3,9)

Question



Answer 1

Then the center is at (-1,7.5)

the radius is sqrt( (9 - 7.5)^2 + (-3 - -1)^2 ) =

sqrt( 1.5^2 + (-2)^2 )

= sqrt( 2.25 + 4) =

sqrt(6.25) = 2.5

the equation of the circle is (x+1)^2 + (y-7.5)^2 = 6.25