Question 50907
{{{ (x1 + x2)/2 }}} , {{{ (y1 + y2)/2 }}} 
A(5,4), B (-3,2)
{{{ (5 + -3)/2 }}} , {{{ (4 + 2)/2 }}}
{{{ 2/2 }}} , {{{ 6/2 }}}
{{{ 1 }}} , {{{ 3 }}}
M = (1,3)