Coordinate Geometry
Chapter 3
Exercise 3.3
EX 3.3 QUESTION 1.
In which quadrant or on which axis do each of the points (-2, 4),(3, -1), (-1, 0),(1, 2) and (-3, -5) lie? Verify your answer by locating them on the Cartesian plane.
Solution:
(– 2, 4): Second Quadrant (II-Quadrant)
(3, – 1): Fourth Quadrant (IV-Quadrant)
(– 1, 0): Negative x-axis
(1, 2): First Quadrant (I-Quadrant)
(– 3, – 5): Third Quadrant (III-Quadrant)
EX 3.3 QUESTION 2.
Plot the points (x, y) given in the following table on the plane, choosing suitable units of distance on the axes.
| x | -2 | -1 | 0 | 1 | 3 |
| y | 8 | 7 | -1.25 | 3 | -1 |
Solution:
The points to plotted on the (x, y) are:
i. (-2, 8)
ii. (-1, 7)
iii. (0, -1.25)
iv. (1, 3)
v. (3, -1)
1cm = 1 unit
