Question

Help asap please!!!!

The midpoint of AB is M (1, 3). If the coordinates of A are (-1, 5), what are the coordinates of B?

Answer 1

(3, 1)

Explanation:

Let the coordinates of B be (x, y)

Since, M is the midpoint of AB.

Therefore, by mid point formula:

`1 = ( - 1 + x)/(2), \: \: \: 3 = (5 + y)/(2) \\ \\ 2 = - 1 + x, \: \: \: 6 = 5 + y \\ \\ 2 + 1 = x, \: \: \: 6 - 5 = y \\ \\ 3 = x, \: \: \: 1 = y \\ \\ x = 3, \: \: \: y = 1 \\ \\ B = (3, \: \: 1)`