A linear equation in 2 variables is like

  3x + 4y = 10

It has

  • An equal sign =
  • Highest power is 1
  • Two variables - x & y

 

Is 3y + 4z = 80 a linear equation in two variable?

Yes,

  It has

  • An equal sign =
  • Highest power is 1
  • Two variable - x & y

 

Is 3x + 4y + 5z = 50 a linear equation in two variable?

No

It has 3 variables - x, y, z.

But in linear equation in two variables, we have 2 variables.


Is 2x + 5 = 0 a linear equation in two variable?

No

It has 1 variable - x

But in linear equation in two variables, we have 2 variables.

  1. Chapter 4 Class 9 Linear Equations in Two Variables
  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.