1. The cost of a notebook is twice the cost of a pen. Write a linear equation in two variables to represent this statement. (Take the cost of a notebook to be ₹ x and that of a pen to be ₹ y) 1. The cost of a notebook is twice the cost of a pen. Write a linear equation in two variables to represent this statement. (Take the cost of a notebook to be ₹ x and that of a pen to be ₹ y) October 15, 2020 Category: Chapter 4 - Linear Equations in Two Variables , Maths , NCERT Class 9 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related