SOLUTION: Find the center radius from of the equation of the circle with center (4,-3) and radius of 9.

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Question 188054: Find the center radius from of the equation of the circle with center (4,-3) and radius of 9.
Answer by jojo14344(1513) About Me  (Show Source):
You can put this solution on YOUR website!


The Standard Form of an Equation of a Circle is given by:
(x-h)^2 + (y-k)^2 = r^2
Where: r=radius; h,k=center; x,y=point on the circle

Given: center (4,-3)= (h,k); radius= r = 9
It follows---> %28x-4%29%5E2%2B%28y-%28-3%29%29%5E2=9%5E2 ---> highlight%28%28x-4%29%5E2%2B%28y%2B3%29%5E2=81%29 ---> Standard form with center (4,-3);
and radius = 9.
See below,

Thank you,
Jojo