Finding a Missing Endpoint

Question

Find the coordinates of J if K(-5,10) is the midpoint of JL and L has coordinates of (-8,6)

Answer 1

L (-8,6)

K (-5,10)

J (-2, 14)

coordinates of J are

x=-2 and y =14

(-2-8)/2 =-5

(14+6)/2 = 10

K (-5,10)

Answer 2

J = (x,y) where (x+(-8))/2 = -5 and (y+6)/2 = 10

Solve for x and y.