Question

Given the endpoint x(11,-2) and the midpoint (4,3) find the missing endpoint y. Write answer as order pair.

Answer 1

9514 1404 393

Answer:

(-3, 8)

Explanation:

For m the midpoint of xy, we have ...

m = (x+y)/2 ⇒ y = 2m-x

y = 2(4, 3) -(11, -2) = (2·4 -11, 2·3 +2)

y = (-3, 8)