Exercise 5.1: Devising a Coordinate System

Exercise 5.1

1. Plot the following points in the coordinate system and identify the quadrants P(–7,6), Q(7,–2), R(–6,–7), S(3,5) and T(3,9)

2. Write down the abscissa and ordinate of the following from fig 5.11.

(i) P

(ii) Q

(iii) R

(iv) S

3. Plot the following points in the coordinate plane and join them. What is your conclusion about the resulting figure?

(i) (–5,3) (–1,3) (0,3) (5,3)

(ii) (0,–4) (0,–2) (0,4) (0,5)

4. Plot the following points in the coordinate plane. Join them in order. What type of geometrical shape is formed?

(i) (0,0) (–4,0) (–4,–4) (0,–4)

(ii) (–3,3) (2,3) (–6,–1) (5,–1)

Activity – 1

Plot the following points on a graph sheet by taking the scale as 1cm = 1 unit.

Find how far the points are from each other?

A (1, 0) and D (4, 0). Find AD and also DA.

Is AD = DA?

You plot another set of points and verify your Result.

Solution: