Originally Posted byScott9909Part the First, find the coordinates of midpoint:By definition, the median from vertex is a line which joins the midpoint of side . But by the midpoint formula the midpoint of is . Thus, the median passes through points and .

Part the Second, find the equation of median:Using the slope-point formula which states that the equation of a line passing through point having slope is . Thus, the slope of is . Thus, the equation of line is (use any point for )

Open and simplify,

Q.E.D.