In Fig. 3.6, LM is a line parallel to the y-axis at a distance of 3 units.

(i) What are the coordinates of the points P, R and Q?


(ii) What is the difference between the abscissa of the points L and M?


(i) The coordinates are:

P(3,2)


R(3,0)


Q(3,-1)


(ii) All the points on the line have the same abscissa i.e.3.


Therefore, difference in abscissa of L and M is 0.


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