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(i) The coordinates of any point can be found by counting the number of units from the origin (0). First we find the x-coordinate of the point by counting the points distance on x-axis and similarly we find the y-coordinate of the point by counting the points distance on y-axis.

So the coordinates of the given points are as shown in the below figure.

(ii) If the three or more points lie on same line these points are collinear in nature.

So from above figure we see that points F, G and H are collinear

Points I, J and K are collinear

Points C, D and E are collinear

(iii) If the points doesn’t lie on same line these points are not collinear in nature.

So from above figure we see that points A, F, I, C are not collinear