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Solution: (a) Y-axis (b) Y-axis

7 7

6 C(4, 6) 6

5 5

4 4 S
(4, 4)
R
3 3 (3, 3)
D(4, 2.5)
Q
2 B(4, 2) 2
(2, 2)
P
1 1 (1, 1)
A(4, 0)
X-axis X-axis
O(0, 0) O(0, 0)
1 2 3 4 5 1 2 3 4 5
The points lie on a line which is The points lie on a line which
parallel to y-axis. passes through origin.

(c) Y-axis

7

6
N(2, 5) M(5, 5)
5

4

3
K(2, 3) L(5, 3)
2

1
X-axis
O(0, 0) 1 2 3 4 5

The points do not lie on a line.

Practice Time 14A

1. Write down the abscissa (x-coordinate) of the following ordered pairs.
(a) (5, 8) (b) (–2, 3) (c) (8, 0) (d) (2, –3)
2. Write down the ordinate (y-coordinate) of the following ordered pairs.

(a) (3, 4) (b) (–2, 8) (c) (9, 0) (d) (0, 2)
3. Find the quadrant in which the following points lie.
(a) (5, 5) (b) (–4, 6) (c) (3, –4) (d) (–5, –7)

Mathematics-8 320