document.write( "Question 573481: determine how many solutions exist use either elimination or substitution to find the solutions if any y=2x+3 and y= -x-4 \n" ); document.write( "

Algebra.Com's Answer #368772 by mananth(16946) $\"\"$ $\"About$

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2 x + 1 y = 3 .............1
\n" ); document.write( "1 x + 1 y = -4 .............2
\n" ); document.write( "Eliminate y
\n" ); document.write( "multiply (1)by -1
\n" ); document.write( "Multiply (2) by 1
\n" ); document.write( "-2 x -1 y = -3
\n" ); document.write( "1 x + 1 y = -4
\n" ); document.write( "Add the two equations
\n" ); document.write( "-1 x = -7.00
\n" ); document.write( "/ -1
\n" ); document.write( "x = 7
\n" ); document.write( "plug value of x in (1)
\n" ); document.write( "2 x + 1 y = 3
\n" ); document.write( "14 + 1 y = 3
\n" ); document.write( " y = -11 \r
\n" ); document.write( "\n" ); document.write( "(7,-11) is the solution
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\n" ); document.write( "m.ananth@hotmail.ca
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