Question

the cost of notebook is twice the cost of the pen linear equation in two variable​

Answer 1

Answer:

x – 2y = 0

Explanation:

Given that cost of a notebook (x) is twice the cost of a pen(y). So, x = 2y. x – 2y = 0 is the linear equation in two variables that represent the statement.

Answer 2

Let the cost of a notebook be Rs. x and that of a pen be Rs. y.

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

$Then \Rightarrow \: x=2y$

$or, \Rightarrow \: x−2y=0.$

This is the required linear equation in two variable.