The midpoint of AB is at (5,-5) If A = (-4, -6), what is B?

1 Answer
Sep 6, 2017

point B is (14, -4)

Explanation:

mid point, (x , y) = ((x_1 +x_2)/2, (y_1 + y_2)/2) where point A, (x_1 , y_1) and B, (x_2 , y_2)

therefore,
(-4 + x_2)/2 = 5 and (-6 + y_2)/2 = -5

-4 + x_2 = 10 and -6 + y_2 = -10

x_2 = 10 + 4 = 14 and y_2 = -10 + 6 = -4

point B is (14, -4)