Answer:

Explanation:
If RS is the diameter of the circle, then the midpoint of RS will be the center of the circle.



Equation of a circle:

(where (h, k) is the center and r is the radius)
Substituting found center (-2, 2) into the equation of a circle:


To find
, simply substitute one of the points into the equation and solve:



Therefore, the equation of the circle is:
