document.write( "Question 171362: When trying to decide if an ordered pair is a solution of a system of liner equation if the x is already negative and the x value given is also negative would it turn positive or stay negative?\r
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document.write( "Ex: (-9,5)
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document.write( " -x + 3y = 24 \n" );
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Algebra.Com's Answer #126511 by gonzo(654)![]() ![]() ![]() You can put this solution on YOUR website! ordered pair: (-9,5) \n" ); document.write( "equation: -x + 3y = 24 \n" ); document.write( "----- \n" ); document.write( "you substitute -9 for x and 5 for y \n" ); document.write( "-x + 3y = 24 becomes: \n" ); document.write( "-(-9) + 3(5) = 24 \n" ); document.write( "this becomes: \n" ); document.write( "9 + 15 = 24 \n" ); document.write( "24 = 24 \n" ); document.write( "----- \n" ); document.write( "the -x in the equation is - (x) \n" ); document.write( "you are substituting for x, not -x \n" ); document.write( "it becomes - (-9) \n" ); document.write( "which then becomes + because a minus of a minus is a plus. \n" ); document.write( "----- \n" ); document.write( " \n" ); document.write( " |