A median of a triangle is a line drawn from a vertex of the triangle to the midpoint of the opposite side of the triangl
问题描述：
A median of a triangle is a line drawn from a vertex of the triangle to the midpoint of the opposite side of the triangle.Find the equation of the median drawn from A(5, -2) to the side formed by B(3, 4) and C(4, -7).
答
median of BC (7/2,-3/2)
所以过A（5,-2）和（7/2,-3/2)的直线为：
y=-x/3-1/3
即：
x+3y+1=0