For the equation
x^2+y^2-8x-2y-19=0 do the following.

a. find the center (h,k) and the radius r of the circle.
b. graph the circle.
c. Find the intercepts, if any.

Question

For the equation    
x^2+y^2-8x-2y-19=0 do the following. 

a. find the center (h,k) and the radius r of the circle.
b. graph the circle.
c. Find the intercepts, if any.

anonymous · Answer

you have to complete the square twice
do you know how to do that?

anonymous · Answer

Yes, I do! I just don't really know how to do that with this problem...

anonymous · Answer

$$x^2-8x+y^2-2y=19$$

anonymous · Answer

half of 8 is 4, half of 2 is 1 go right to 
$$(x-4)^2+(y-1)^2=19+4^2+1^2$$ and work from there

anonymous · Answer

ok! Thank you! I have to write that down

anonymous · Answer

yes you should write it down
yw

anonymous · Answer

I meant to write it down so i can work it out and transfer it on to my online class... :)