SOLUTION: How to convert the equation of the circle from standard form(or any other form) to graphing form? Can anyone show me how to convert this equation: y=-+squareroot[9-(x-4)^2] - 2 to

Algebra ->  Graphs -> SOLUTION: How to convert the equation of the circle from standard form(or any other form) to graphing form? Can anyone show me how to convert this equation: y=-+squareroot[9-(x-4)^2] - 2 to      Log On


   

Question 254979: How to convert the equation of the circle from standard form(or any other form) to graphing form?
Can anyone show me how to convert this equation: y=-+squareroot[9-(x-4)^2] - 2 to the graphing form, which looks like: (something)^2+ (something)^2 = something( in this case =9)
Thanks
Answer by drk(1908) About Me  (Show Source):
You can put this solution on YOUR website!
y=%2B-sqrt%289-%28x-4%29%5E2%29+-+2
add 2 to get
y+%2B+2+=+%2B-sqrt%289-%28x-4%29%5E2%29
square both sides to get
%28y%2B2%29%5E2+=+9-%28x-4%29%5E2
add (x-4)^2 to both sides to get
%28x-4%29%5E2+%2B+%28y%2B2%29%5E2+=+9
center = (4,-2) with radius of 3