29.  Equation of circle:  formula : (x - h)2 + (y - k)2 = r2 center: (-3, 4) = (h, k) Determine the radius using one of the given points on the circle.  Using the origin (0,0), the radius can be found using the distance formula or from constructing a 3,4,5 right triangle.  The radius is 5. Equation:  (x +3)2 + (y - 4)2 = 25