helpppppppppppppppppppppppppppppppppppppp math will give brainy thing 50 points

Answer:
( - 10 , 6 )
Step-by-step explanation:
( [tex]\frac{x_{1} +x_{2} }{2}[/tex] , [tex]\frac{y_{1} +y_{2} }{2}[/tex] )
(- 4 + x ) / 2 = - 7 ⇔ - 4 + x = - 14 ⇒ x = - 10
( - 4 + y ) / 2 = 1 ⇔ - 4 + y = 2 ⇒ y = 6
( - 10 , 6 )