Coordinate Geometry (Exercise 3.3)

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