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7. Yamini and Fatima, two students of Class IX of a school, together contributed Rs. 100 towards the Prime Minister’s Relief Fund to help the earthquake victims. Write a linear equation which satisfies this data. (You may take their contributions as Rs. x and Rs. y.) Draw the graph of the same.

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Let contribution of yamini be x.

      contribution of yamini be y.

According to question,


For x=0 , we have y=100-0=100

For x=10 , we have y=100-10=90

For x=20 , we have y=100-20=80

Hence, (0,100) , (10,90)  and  (20,80)





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