The given equation is
3x – 4y = – 9
and 3x + y = 9
Now, let us find atleast two solutions of each of the above equations, as shown in the following tables.
Here, the lines are intersecting at point C (2, 3).
The coordinates of the vertices of ∆ACD are A( – 2,0), C(2,3)and D(3,0)