O(0,0) Penyelesaian: r Pusat (4,-3) P(4,-3) → a = 4, b = -3 Jari-jari = r = OP OP = (4 0)2 (3 0)2 r = 16 9 25 5 → r2 = 25 Jadi, persamaan lingkarannya (x - 4)2 + (y + 3)2 = 25 26