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).

Let, The cost of a notebook $= ₹x$

cost of a pen $= ₹y$

According to the question, The cost of a notebook is twice the cost of a pen

Cost of a notebook =2 x Cost of a pen

$x = 2 \times y$

$x = 2y$

$x – 2y = 0$

Hence, the required linear equation is $x – 2y = 0$.