Q. 64.1( 14 Votes )

# John tells

Answer :

Let the present age of father be x and present age of daughter be y.

John tells his daughter, ‘Seven years ago, I was seven times as old as you were then. Also, three years from now, I shall be three times as old as you will be.”

x 7 = 7(y 7)

x – 7 = 7y – 49

x 7y + 42 = 0

x = 7y – 42

x = 7(y – 6) 

The coordinates satisfying above equation are Also, x + 3 = 3(y + 3)

x + 3 = 3y + 9

x 3y 6 = 0

x = 3y + 6

x = 3(y + 2) The graph of both the equation is the required graphical representation and the equations  and  are two required algebraic representations. Rate this question :

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