The vertices of the triangle are A(-3, 2), B(-5, -6), and
C(5, 0).
To find the median from A, to the other side BC,
we have to find the mid point M of BC and then find the equation of the line through A
and M.
M(x , y) = ( (xB+xC)/2 ,
(yB+yC)/2)
xM = (-5+5)/2 =
0
xM = (-6 +0)/2 = -3.
M(x ,y)
=(0,-3)
Now we find the equation of the median AM, with
A(-3,2) and M(0,-3).
We know that the line joining the
points (x1 , y1) and (x2,y2) is:
y-y1 =
{(y2-y1(/(x2-x1)}(x-x1).
Therefore the equation of AM
is:-
y- -2) = {(-3-2)/(0 - 3)}(x-
-3)
y+2 =( 5/3 )(x+3)
3(y+2) =
5(x+2)
3y+6 =5x+10
5x-3y+10-6
=0
5x-3y+4 = 0
Therefore the
equation of the median is 5x-3y+4 = 0 is the equation of the median through the vertex A
of the triangle.
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