Ncert Solutions For Class 9 Maths Ex 3.3

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

Solution:

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

 

Q2. Plot the points $(x,y)$ 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 $(x,y)$ on the plane.

Here, let  1unit = 1 cm

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

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