The cost of a pencil box is thrice the cost of a pencil . Write a linear equation in two variables to represent this statement. Find four solutions and draw the graph for this equation. (Take the cost of a pencil box to be ₹ x and that of a pencil to be ₹ y)
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Let the cost of a pen be x and the cost of a pencil be y
According to the statement, cost of a pen is thrice the cost of a pencil
⇒x=3y
⇒x−3y=0 which is a linear equation in two variable
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