NCERT Solutions for Class 9 Maths Chapter 3 Coordinate Geometry Ex 3.3

NCERT Solutions for Class 9 Maths Chapter 3 Coordinate Geometry Ex 3.3

NCERT Solutions for Class 9 Maths Chapter 3 Coordinate Geometry Ex 3.3

NCERT Solutions for Class 9 Maths Chapter 3 Coordinate Geometry Ex 3.3 are the part of NCERT Solutions for Class 9 Maths. Here you can find the NCERT Solutions for Class 9 Maths Chapter 3 Coordinate Geometry Ex 3.3.

Ex 3.3 Class 9 Maths Question 1.
In which quadrant or on which axis does 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:

1. (-2, 4) lies in the 2nd quadrant.

2. (3, -1) lies in 4th quadrant.

3. (-1, 0) lies on x-axis.

4. (1, 2) lies in 1st quadrant.

5. (-3, -5) lies in 3rd quadrant.

Ex 3.3 Class 9 Maths Question 2.
Plot the points (x, y) given in the following table on the plane, choosing suitable units of distance on the axes.

Solution:
The given points are (-2, 8), (-1, 7), (0, -1.25), (1, 3) and (3, -1).

Let 1 unit = 1 cm, then the positions of the given points in the Cartesian plane are as follows:

To plot these points:
(i) We draw X’OX and YOY’ two mutually perpendicular axes.
(ii) We choose suitable units of distance on the axes.
(iii) To plot (-2, 8), we start from O, take (-2) units on x-axis and then (+8) units on y-axis. We mark the point as A(-2, 8).

(iv) To plot (-1, 7), we start from O, take (-1) units on x-axis and then (+7) units on the y-axis. We mark the point as B(-1, 7).

(v) To plot (0, -1.25), we move along 1.25 units on the y-axis below the origin and mark the point as C(0, -1.25).

(vi) To plot (1, 3), we take (+1) unit on the x-axis and then (+3) units on the y-axis. We mark the point as D(1, 3).
(vii) To plot (3, -1), we take (+3) units on the x-axis and then (-1) unit on the y-axis. We mark the point E(3, -1).

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