In △ABC, the vertices are A(1,2), B(7,−4) and C(−3,6).
(i) Find the coordinates of the midpoint M of side BC.
(ii) Hence obtain the equation of the median through vertex A in both point–slope form and slope–intercept form.
(iii) Determine the y-intercept of this median and comment on whether the median passes above or below the origin.