Question

Graph the circle. x^2+y^2+2x-8y+8=0
How do I convert the equation so I can graph it?

Answer 1

do you know the equation for a circle?

Answer 2

Thats what I have to find out to graph it. This is what the question gave me.

Answer 3

have you done how to "complete the square" to get a perfect square trinomial yet?

Answer 4

\[x ^{2}+y ^{2}+2x-8y+8=0\]

Answer 5

no i don't know how to

Answer 6

well, then => http://www.youtube.com/watch?v=xGOQYTo9AKY

Answer 7

as far as the circle equation => http://www.mathwarehouse.com/geometry/circle/images/equation-of-circle/general-formula-equation-of-circle.png

Answer 8

thank you!

Answer 9

yw