Posted by Anonymous on .
circle
x^2+y^26x+12y+33=0
1. transform equation to standard form
2. graph
3. label centers
4. mark radius of each

math 
Reiny,
complete the square
x2  6x + ..... + y^2 + 12y + .... = 33
x^2  6x + 9 + y^2 + 12y + 36 = 33 + 9 + 36
(x+3)^2 + (y+6)^2 = 12
I am sure you can finish the question from here,
but...
I am puzzles by 3. and 4.
it says to label centres and in 4. to mark the radius of each.
That suggests that there are more than one circle.