M is the midpoint of JK. find the coordinates of K.

Question

1. J (-8,4) M (-1,1)
2. J (9,-5) M (5, -2)
3. J (0,11) M (-3,2)

Please help me with this! I need help on this step by step. Thank you!

Answer 1

I will do one of them, you do the rest using my format

1. Let K be (x,y)
then (x+(-8) )/2 = -1 and (y+4)/2 = 1
x-8 = -2 and y+4 = 2
x = 6 and y = -2
so K is (6,-2)

Answer 2

-7,3

Answer 3

6,-2

Answer 4

(6;2)