Do number 61

In Exercises 57-64 write the standard form of the equation of the circle with the given characteristics. 57. Center: (0. 0); radius: 4 58. Center: (0, 0); radius: 5 59. Center: (2, - 1); radius: 4 60. Center: (-7, -4); radius: 61. Center: (- 1, 2); solution point: (0, 0) 62. Center: (3, -2); solution point: (- 1, 1)