SOLUTION: Give the equation for the circle with center C(3, −2) and radius 4.

Algebra ->  Quadratic-relations-and-conic-sections -> SOLUTION: Give the equation for the circle with center C(3, −2) and radius 4.      Log On


   

Question 7488: Give the equation for the circle with center C(3, −2) and radius 4.
Answer by ichudov(507) About Me  (Show Source):
You can put this solution on YOUR website!
What the question asks you is to find the equation for all points whose distance to point (3, -2) is 4.
We know that square of distance between point (x, y) and (3, -2) is
Distance%5E2+=+%28x-3%29%5E2+%2B+%28y-%28-2%29%29%5E2
The problem gives us distance as 4.
So,
%28x-3%29%5E2+%2B+%28y-%28-2%29%29%5E2+=+4%5E2 that's your answer