Help. ​

Midpoint  =  (  [ add x's] / 2 ,   [add y's] / 2  )   .....so we have

x value of midpoint  = [ 3 +  x] / 2  = 5       multiply both sides by  2

                                   3 + x  = 10      →   x = 7   

y value of midpoint  = [ 5 +  y ] / 2  = - 11       multiply both sides by  2

                                   5 + y  = - 22          subtract  5 from both sides

                                        y   =   - 27

Midpoint =   ( 7, - 27)