Question

What is the value of b for the following circle in general form?
http://media.apexlearning.com/Images/200706/04/041111cc-fb2a-406e-9e0f-fa9e67f96aa3.jpg

Answer 1

How do I solve this?

Answer 2

Link won't open.

Answer 3

"Referral Denied" :)

Answer 4

also what do you mean by "b" ?

Answer 5

also part of the problem says x^2+y^2+ax+by+c=0

Answer 6

center is (1,-2)
radius is 3

Answer 7

equation of circle is:
\[(x-1)^{2} +(y+2)^{2} = 9\]
expand to get in other form

Answer 8

\[x ^{2}-2x+1+y^{2}+4x+4=9\] Like this?

Answer 9

yep, now combine like terms and set equal to 0

Answer 10

b=4

Answer 11

Ahh I see, thank you so much for the help! (: I appreciate it.

Answer 12

yw