SOLUTION: I like to now how to solve and graph center and radius for {{{x^2 + y^2 = 4}}}

SOLUTION: I like to now how to solve and graph center and radius for {{{x^2 + y^2 = 4}}}

Algebra.Com

Question 940878: I like to now how to solve and graph center and radius for

Answer by macston(5194) (Show Source): You can put this solution on YOUR website!
The standard form equation for a circle is:

In this equation the center is at (h,k) and r is the radius
For example:

is a circle with center at (3,-4) and a radius of 4
In the equation:

h and k are 0, so the center is at the origin, (0,0) and the radius squared is 4 so the radius is 2
Graph:

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