midpoint formula

Question

point A is at (-1,8) and point m is at (3,5.5). Point M is the midpoint of point A and B. What are the coordinates of point B?

Answer 1

The Midpoint Formula is

((x₁+x₂)/2, (y₁,+y₂)/2)

Let the coordinates of point A = x₁,y₁= (-1,8)

Let the coordinates of point B = x₂,y₂

You have the coordinates of the midpoint m = (3, 5.5)

You can plug in the known values to find the coordinates of B as follows:

(-1 + x₂)/2 = 3

(8 + y₂)/2 = 5.5

Give it a try.