NCERT Solutions Class 9 Mathematics Chapter 4 Linear Equations In Two Variables
Exercise 4.1 Q.1) The cost of a notebook is twice the cost of a pen. Write a linear equation in two variables to represent this statement. Sol.1) Cost of a notebook = π₯ Cost of a pen = π¦ Then according to the given statement π₯ = 2π¦ or π₯ β 2π¦ = 0 Q.2) Express theβ¦