Question

Plot the following points P(1, 1), Q(2, -3) and R(-1, -2) and check whether they are collinear or not.

Answer 1

Plotting the points P(1, 1), Q(2,-3) and R(-1,-2) on the graph paper and joining the thee three points, we get three lines. i.e the given points do not lie on the same line.
So, given points are not collinear.