Study Materials

NCERT Solutions for Class 9th Mathematics

 

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Chapter 4. Linear Equation In Two Variables

Exercise 4.4

 

 

 

Linear equation in two variable

Exercise : 4.4

1. Give the geometric representations of y = 3 as an equation :

(i) in one variable

(ii) in two variables

Solution :

 (i) y = 3

   (ii) y = 3

   =   (0)x + y = 3

   =   y = 3 - (0)x

2. Give the geometric representations of 2x + 9 = 0 as an equation :

(i) in one variable

(ii) in two variables

Solution :

 (i) 2x + 9 = 0

(ii) 2x + y = 0

=   2x + 0.y + 9 = 0

=   2x = -9      =  x = -4.5           

 

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