Draw the graphs of the equations 5x – y = 5 and 3x – y = 3. Determine the co-ordinates of the vertices of the triangle formed by these lines and the y axis.

The given equations are
5x - y = 5    ...(i)
3x - y = 3    ...(ii)
For equation (i), we have
= 5x - 5
Thus, we have following table :

For equation (ii), we have
y = 3x - 3
Thus, we have following table :

Fig. 3.14.