Question

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

Answer 1

ANSWER: B = (3, 1)

EXPLANATION: to get from the midpoint AB to point A, we would get the distance between them to determine the distance from midpoint AB to point B. the distance between the x values 1 and -1 is 2. the distance between the y values 3 and 5 are 2. x values are rising in this case and y values are decreasing. to get to B, we would do 1 + 2 = 3, and 3 - 2 = 1. this would give us (3, 1)