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NCERT solution class 9 chapter 3 Coordinate Geometry exercise 3.3 mathematics

EXERCISE 3.3


Page No 65:

Question 1:

In which quadrant or on which axis do each of the points and lie? Verify your answer by locating them on the Cartesian plane.

Answer:

The point lies in the IInd quadrant in the Cartesian plane because for pointx-coordinate is negative and y-coordinate is positive.

Again, the point lies in the IVth quadrant in the Cartesian plane because for pointx-coordinate is positive and y-coordinate is negative.

The point lies on negative x-axis because for point , the value of y-coordinate is zero and the value of x-coordinate is negative.

The point lies in the Ist quadrant as for point , both x and y are positive.

The point  lies in the IIIrd quadrant in the Cartesian plane because for point , both x and y are negative.


Question 2:

Plot the point (xy) given in the following table on the plane, choosing suitable units of distance on the axis.

x

− 2

− 1

0

1

3

y

8

7

−1.25

3

− 1

Answer:

The given points can be plotted on the Cartesian plane as follows.


 

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