Write the standard form equation of a circle with a center at (-3, 4) and a radius of 4.
Solution:-
Substitute the coordinates and write in standard form:
(x -h)2 + (y – k)2 = r2
So the equation is
=> (x +3)2 + (y – 4)2 = 42
=> (x +3)2 + (y – 4)2 = 16