NCERT Solutions For Class 9 Math Chapter – 4 Exercise – 4.1

NCERT Solutions For Class 9 Math Chapter – 4 Exercise – 4.1

NCERT Solutions For Class 9 Math Chapter – 4 Linear Equation in two variables  helps students in learning basic concepts of probability which is include in the second term’s CBSE syllabus 2021-2022  NCERT Solutions For Class 9 Maths provide answers to all the questions in exercise present at the end of the chapter These solutions are prepared by our mathematics experts who are highy experienced in the field of education.

 Experts
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Q1. The cost of a notebook is twice the cost of a pen Write a linear equation in two variables to represent this statement.

Solution:-

 

Let the cost of pen be y

Let the cost of notebook be x

2y = x

X – 2y = 0

This is linear equation u=in two variables in two variables to represent this statement.

 

Q2. Express the following linear equation in the form ax + by + c= 0 and indicate the following the value of a , b  and c in each case:

Solution:-

 

  • 2x + 3y = 9.35
  • X – y/5 – 10 = 0
  • -2x + 3y = 6
  • X = 3y
  • 2x = -5y
  • 3x + 2= 0
  • Y – 2 =0
  • 5 = 2x

Solution:-

 

  • 2x + 3y = 9.35

2x + 3y – 9.35 = 0

A = 2x , b = 3 and c = -9.35

 

  • X – y/5 – 10 = 0

A = 1 , b = -1/5 and c = -10

 

  • -2x + 3y = 6

A = -2 , b = 3 and c = -6

 

  • X = 3y

A = 1 , b = 3 and c = 0

 

  • 2x = -5y

A = 2 , b = 5 and c = 0

 

  • 3x + 2

A = 3 , b =  and c = 2

 

  • Y – 2 = 0

A = 0 , b = 1 and c = -2

 

  • 5 = 2x

A = -2 , b = 0 and c = 5