Question

what type of straight lines will be represented by the system of equations 5x+3y=7and 7x+4y=9?
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Answer 1

Answer

5x+ 3y +7x+4y=9

=>5x+7x+3y+4y=9

=>5x+7x+3y+4y=9

=>2x+y=9

=>x+y=9/2=4.5