Question

the cost of a note book is twice the cost of a pen. write a linear equation in two variables to represent this statement.
(take the cost of a note book to be ₹ x
and that of a pen to be ₹ y.) ​

Answer 1

Answer:

the linear equation is 2x-y=0

Answer 2

The linear equation is x-2y=0.

The cost of notebook = x

The cost of pen = y

Given:

The cost of a notebook is twice as that of a pen.

x = 2y

x−2y=0

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