[tex] (x_{m},y_{m} ) = (\frac{X_{A} +X_{B} }{2} ,\frac{Y_{A} + Y_{B} }{2}) [/tex]
[tex] (x_{m},y_{m} ) = (\frac{5-1}{2} ,\frac{8-4 }{2}) [/tex]
[tex] (x_{m},y_{m} ) = (\frac{4}{2} ,\frac{4 }{2}) [/tex]
[tex] (x_{m},y_{m} ) [/tex] = (2, 2)
Answer: (2, 2)