( - 4, - 1 )
given 2 points ( x₁ , y₁ ) and ( x₂ , y₂ )
the coordinates of the midpoint are
midpoint = [ [tex]\frac{1}{2}[/tex] (x₁ + x₂ ) , [tex]\frac{1}{2}[/tex] (y₁ + y₂ ) ]
here (x₁ , y₁ ) = ( - 1 , 2 ) and (x₂ , y₂ ) = ( - 7, - 4 )
midpoint = [ [tex]\frac{1}{2}[/tex] ( - 1 - 7 ) , [tex]\frac{1}{2}[/tex] (2 - 4 )] = (- 4, - 1 )
