Linear Equation in one variable means

  • Only one variable
  • An = sign
  • highest power 1

Let’s take some examples

 

x + 1 = 0

Here,

  • There is only 1 variable − x
  • There is an equal sign
  • Highest power of x is 1 (x^1=x)

∴ It is linear equation in in one variable

 

2x + 3 = 0

Here,

  • There is only 1 variable - x
  • There is an equal sign
  • Highest power of x is 1 (x^1=x)

∴ It is linear equation in in one variable

 

4x + 5 = 108

Here,

  • There is only 1 variable - x
  • There is an equal sign
  • Highest power of x is 1 (x^1=x)

∴ It is linear equation in in one variable

 

3x

There is no equal sign

∴ It is not a linear equation in one variable

 

4x 2 + 1 = 0

Highest power of x = 2

∴ It is not a linear equation in one variable

 

3x + 2y = 3

Here, we have two variables x & y

∴ It is not a linear equation in one variable

  1. Chapter 2 Class 8 Linear Equations in One Variable
  2. Concept wise

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 8 years. He provides courses for Maths and Science at Teachoo. You can check his NCERT Solutions from Class 6 to 12.