Answer:
(4. 5, 4 )
Step-by-step explanation:
Given the endpoints of a segment, (x₁, y₁ ) and (x₂, y₂ ) then
midpoint = [ 0.5(x₁ + x₂), 0.5(y₁ + y₂ ) ]
Here (x₁, y₁ ) = Q(1, 7) and (x₂, y₂ ) = R(8, 1 ), thus
midpoint = [ 0.5(1 + 8), 0.5(7 + 1) ] = [0.5(9), 0.5(8)] = (4.5, 4 )
