question_answer 1)

                Plot the following points on a graph sheet. Verify if they lie on a line (a) \[A(4,\,0),\text{ }B(4,\,2),\text{ }C(4,\,6),\text{ }D(4,\,2.5)\] (b) \[P(1,\,1),\text{ }Q(2,\,2),\text{ }R(3,\,3),\text{ }S(4,\,4)\] (c) \[K(2,\,3),\text{ }L(5,\,3),\text{ }M(5,\,5),\text{ }N(2,\,5)\]

Answer:

                (a) The points lie on a line. (b) The points lie on a line. (c) The points do not lie on a line.