NCERT solution class 9 chapter 3 Coordinate Geometry exercise 3.3 mathematics

EXERCISE 3.3

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Q 1, Ex 3.3, Page No 65, Coordinate Geometry - NCERT Class 9th Maths

Page No 65:

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.

Answer:

The point (-2,4) lies in the II^nd quadrant in the Cartesian plane because for point (-2,4), x-coordinate is negative and y-coordinate is positive.
Again, the point (3,-1) lies in the IV^th quadrant in the Cartesian plane because for point (3,-1), x-coordinate is positive and y-coordinate is negative.
The point (-1,0) lies on negative x-axis because for point  (-1,0), the value of y-coordinate is zero and the value of x-coordinate is negative.
The point (1,2) lies in the I^st quadrant as for point  (1,2), both x and y are positive.
The point (-3,-5) lies in the III^rd quadrant in the Cartesian plane because for point (-3,-5) both x and y are negative.

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Q 2, Ex 3.3, Page No 65, Chapter 3 - Coordinate Geometry - NCERT Class 9th Maths

Question 2:

Plot the point (x, y) 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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