document.write( "Question 201818: Consider the following system of equations:\r
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document.write( "{4x-7y=-5
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document.write( " 5x+3y=29\r
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document.write( "Does the system have: one solution, no solution or infinite solutions?d \n" );
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Algebra.Com's Answer #152044 by RAY100(1637)![]() ![]() ![]() You can put this solution on YOUR website! Remember (1) if slopes are different, lines intersect, \n" ); document.write( "and this is one solution \n" ); document.write( "(2) If lines are parallel, and lie on top of each other, \n" ); document.write( "They are coincident, and have infinite solutions. \n" ); document.write( "(3) if lines are parallel, but not coincident, they have no solutions. \n" ); document.write( ". \n" ); document.write( "Since slope is best indicator of parallelism, the slope intercept is valuable. Usually best to transform to this style. \n" ); document.write( ". \n" ); document.write( "For this problem \n" ); document.write( ". \n" ); document.write( "(1) 4x-7y = -5,,,,y= (4/7)x + (5/7) \n" ); document.write( ". \n" ); document.write( "(2) 5x +3y =29,,,,y = (-5/3)x + (29/3) \n" ); document.write( ". \n" ); document.write( "As these have different slopes, they are not parallel, and have one solution. \n" ); document.write( ". \n" ); document.write( "Ref ( 4,3) is solution \n" ); document.write( " |