The vertices of the triangle ABC have coordinates A(-5,3) , B(-2,0) and
C(4,-1) . Find the equations of the sides of the triangle.
Make a sketch on the coordinate plane will make things easier .
Let me start you off with the line AB .
The gradient is -1 and we know the line passes through point (-5,3) or
(-2,0)
y-y1=m(x-x1)
thus , y=-x-2
do it this way for the remaining two sides of the triangle .