In Exercises 2-4 use ARES with coordinates R(0, 0), E(4, -6), and S(8, 4).
2. Find the equation of the line containing median RM.
3. Find the equation of the line containing altitude EH.
4. Find the equation of the perpendicular bisector of side RE.
5.
Find the coordinates of the centroid of the triangle formed by the x-axis, the y-axis,
and the line 12x + 9y = 36.