Question

Find the coordinates of the missing endpoint if E is the midpoint of DF.
D(-3,-8), E(1,-2)

Answer 1

F(5;4)

Explanation:

Call F(x;y)

cuz E is the midpoint so we have a formula:

(-3+x)/2=1 -> x=5

(-8+y)/2=-2 -> y= 4

so F(5;4)