Mid point of the line segment joining two points, (a,b) and (c,d) is,
[tex](\frac{a+c}{2},\frac{b+d}{2})_{}[/tex]Here the points are,
[tex](4\frac{1}{2},\text{ }\frac{5}{2}),\text{ (}\frac{10}{7},\frac{4}{7})[/tex]Therefore, the mid point is,
[tex](\frac{\frac{9}{2}+\frac{10}{7}}{2},\frac{\frac{5}{2}+\frac{4}{7}}{2})[/tex][tex](\frac{63+20}{28},\frac{35+8}{28})[/tex][tex](\frac{83}{28},\frac{43}{28})[/tex]