Question

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).​

Answer 1

Answer:

Step-by-step explanation

let cost of a pen be y

let cost of the notebook be x

according to question

cost  of notebook is twice that of pen

x = 2y

x - 2y = 0  

therefore , x - 2y = 0 is a linear equation representing the following question

hope this will help you

Answer 2

$\large\blue{\underline{\underline{\green{\mathscr{Solution:-}}}}}$

Let the cost of a notebook to be = ₹ x

Let the cost of a pen to be = ₹ y

According to the question,

The cost of a notebook is twice the cost of a pen.

i.e., Cost of a notebook = 2×Cost of a pen

$→x = 2y$

$→x - 2y = 0$

x-2y = 0 is the linear equation in two variables yo represent the statement 'The cost of a notebook is twice the cost of a pen'.