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20-03-2017
Mathematics

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Anisha score 30 marks in a test getting 4 marks for each right answer and losing 1 marks for each wrong answer. it no of attempted right questions by her is X and that attempt in correctly is y. then write a linear equation which satisfies this data also draw the graph of the equation

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20-03-2017

4x-y=30

y=4x-30
..........

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