document.write( "Question 142771: y=4x-9 y=x \n" ); document.write( "
Algebra.Com's Answer #103926 by checkley77(12844)\"\" \"About 
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y=4x-9
\n" ); document.write( "y=x
\n" ); document.write( "x=4x-9
\n" ); document.write( "x-4x=-9
\n" ); document.write( "-3x=-9
\n" ); document.write( "x=-9/-3
\n" ); document.write( "x=3 answer.
\n" ); document.write( "y=3
\n" ); document.write( "proof
\n" ); document.write( "3=4*3-9
\n" ); document.write( "3=12-9
\n" ); document.write( "3=3
\n" ); document.write( " \n" ); document.write( "
\n" );