which conic section does the equation below describe?
(x+1)^2+(y-3)^2=4
A.)Hyperbola
B.)Circle
C.)Parabola
D.)Ellipse

Question

which conic section does the equation below describe?
(x+1)^2+(y-3)^2=4
A.)Hyperbola
B.)Circle
C.)Parabola
D.)Ellipse

bradely · Answer

(x+1)^2+(y-3)^2=4
Simplified form (x-(-1))^2+(y-3)^2=2^2
The equation is in the form (x-h)^2+(y-h)^2=r^2
So conic is circle
B is correct
Source:www.mathskey.com

kainui · Answer

It looks like the pythagorean theorem. But what's going on with it? The hypotenuse is constant, and the sides can change. Can you try to imagine picking a point, then extending a constant length from it and then imagining there being a bunch of different possible triangles that you can make as you move the hypotenuse to different places? |dw:1406514945805:dw|

bradely · Answer

hi, any pre-calculus help please post on source site