document.write( "Question 1087563: Find the point of intersection of the pair of straight lines.
\n" ); document.write( "y= −10x-5
\n" ); document.write( "−y =11x+ 9
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Algebra.Com's Answer #701867 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
(1) $\"+y+=+-10x+-+5+\"$
\n" ); document.write( "(2) $\"+-y+=+11x++%2B+9+\"$
\n" ); document.write( "---------------------
\n" ); document.write( "Add the equations
\n" ); document.write( " $\"+0+=+-10x+%2B+11x+%2B+4+\"$
\n" ); document.write( " $\"+0+=+x+%2B+4+\"$
\n" ); document.write( " $\"+x+=+-4+\"$
\n" ); document.write( "Put this result back into (1) or (2)
\n" ); document.write( " $\"+y+=+-10%2A%28-4%29+-+5+\"$
\n" ); document.write( " $\"+y+=+40+-+5+\"$
\n" ); document.write( " $\"+y+=+35+\"$
\n" ); document.write( "the intersection is ( -4, 35 )
\n" ); document.write( "---------------------------------
\n" ); document.write( "check:
\n" ); document.write( "(1) $\"+35+=+-10%2A%28-4%29+-+5+\"$
\n" ); document.write( "(1) $\"+35+=+40+-+5+\"$
\n" ); document.write( "(1) $\"+35+=+35+\"$
\n" ); document.write( "and
\n" ); document.write( "(2) $\"+-35+=+11%2A%28-4%29++%2B+9+\"$
\n" ); document.write( "(2) $\"+-35+=+-44+%2B+9+\"$
\n" ); document.write( "(2) $\"+-35+=+-35+\"$
\n" ); document.write( "OK\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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