1.

of linear equationsce, the cost of a pencil and a pen are 3 and t 5ectively3. Mukesh tells his daughter, "seven years ago, Itimes as old as you where then. Also three yearsmpleBsevennow, I shall be three times as old as you will be". Isn'tnteresting? Represent this situation both algebraicallygraphicallytion. Let us denote the present age of Mukesh bers and present age of his daughter by y years. Then, theraic representation is given by the following equations:

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