Plot the Points (3, 5) and (-1, 3) on a graph paper and verify that the straight line passing through the points, also passes through the point (1, 4).
Plot points (3, 5), (-1, 3) and (1, 4) on a graph.
Let A(1, 4), B(3, 5) and C(-1, 3)
Points (3, 5) and (-1, 3) have been plotted on the graph and joined to get a line. We see that the point (1, 4) also lies on this line.