Answers

The Brainliest Answer!
2014-06-08T19:52:43+08:00
Given:
C(-1,7)
P(1,2)

given that P is the other end of diameter and C is the center we can say that C is the mid point of the diameter. to find the other end we use the mid point of a line segment formula:

 x_{m} = \frac{ x_{1}+ x_{2}  }{2}

                                  and

 y_{m} = \frac{ y_{1}+ y_{2} }{2}

Solution:

 -1 = \frac{1+ x_{2} }{2}

 x_{2} = -3

 7 = \frac{2+ y_{2} }{2}

 y_{2} = 12

therefor, the other end of diameter or  P_{2}

 P_{2}(-3,12)
2 5 2