A linear equation is of the form

  2x + 5 = 0

In linear equation

  • We have = sign, since it is equation
  • Highest power of x is 1

 

Is 2x + 3y + 4z = 5 a linear equation?

Yes

The equation has

  • An = sign
  • Highest power of x, y, z is 1

 

Is 3y + 100 = 0 a linear equation?

Yes

The equation has

  • An = sign
  • Highest power of y is 1

 

Is 3y 2 + 10y = 0 a linear equation?

No

Since the highest power of y is 2, it is not a linear equation

  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.