# Ncert Solutions For Class 9 Maths Ex 3.3

## Ncert Solutions For Class 9 Maths Chapter 3 Ex 3.3

Q1. Represent the following points (3,1),(2,4),(1,2),(1,0)and(3,5)$(3,-1), (-2,4), (1,2), (-1,0)\; and \;(-3,-5)$ on a Cartesian plane and also tell in which quadrant do they lie? Give reason for your answer.

Solution:

(2,4)Secondquadrant$(-2,4)\rightarrow \;Second\; quadrant$
(3,1)Fourthquadrant$(3,-1)\rightarrow \;Fourth\; quadrant$
(1,0)Secondquadrant$(-1,0)\rightarrow \;Second\; quadrant$
(1,2)Firstquadrant$(1,2)\rightarrow \;First\; quadrant$
(3,5)Thirdquadrant$(-3,-5)\rightarrow \;Third\; quadrant$

Q2. Plot the points (x,y)$(x,y)$ given in the following table on the plane, choosing suitable units of distance on the axes and also tell in which quadrant or axis does it lies.

 x -2 -1 0 1 3 Y 8 7 -1.25 3 -1

Solution:

Points (x,y)$(x,y)$ on the plane.

Here, let  1unit = 1 cm

(2,8)Secondquadrant$(-2,8)\rightarrow \;Second\; quadrant$ (1,7)Secondquadrant$(-1,7)\rightarrow \;Second\; quadrant$ (0,1.25)Fourthquadrant$(0,-1.25)\rightarrow \;Fourth\; quadrant$ (1,3)Firstquadrant$(1,3)\rightarrow \;First\; quadrant$ (3,1)Fourthquadrant$(3,-1)\rightarrow \;Fourth\; quadrant$