Question

Determine the equation of the circle graphed below.

Answer 1

x^2 + y^2 = 49

Explanation:

The equation of a circle is given by

( x-h) ^2 + (y-k) ^2 = r^2

(h,k) is the center of the circle and r is the radius

The circle is centered and (0,0) and the radius is 7

( x-0) ^2 + (y-0) ^2 = 7^2

x^2 + y^2 = 49