1. The cost of a notebook is twice the cost of a pen. Write a linear in two variables to represent this statement.
(Take the cost of a notebook to be x and that of a pen to be y).
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1. The cost of a notebook is twice the cost of a pen. Write a linear in two variables to represent this statement.
(Take the cost of a notebook to be x and that of a pen to be y).
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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 = 0 is the linear equation in two variables yo represent the statement 'The cost of a notebook is twice the cost of a pen'.