document.write( "Question 480044: Systems of equations can be solved by graphing or by using substitution or elimination.
\n" ); document.write( "y = x + 5 and x + y = -2 which method would you use? \n" ); document.write( "

Algebra.Com's Answer #328838 by Tatiana_Stebko(1539) $\"\"$ $\"About$

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$\"system%28y+=+x+%2B+5+%2C+x+%2B+y+=+-2%29\"$
\n" ); document.write( "I think better to use the substitute method
\n" ); document.write( "substitute $\"y=x%2B5\"$ into the second equation
\n" ); document.write( " $\"x%2Bx%2B5=-2\"$
\n" ); document.write( " $\"2x=-2-5\"$
\n" ); document.write( " $\"2x=-7\"$
\n" ); document.write( " $\"x=-7%2F2\"$
\n" ); document.write( " $\"x=-3.5\"$ substitute into the first equation of the system
\n" ); document.write( " $\"y=-3.5%2B5\"$
\n" ); document.write( " $\"y=1.5\"$
\n" ); document.write( "Answer (-3.5,1.5) \n" ); document.write( "

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