document.write( "Question 105420: Determine which two equations represent parallel lines.
\n" ); document.write( "(a) y = –7x + 4
\n" ); document.write( "(b) y = 7x + 4
\n" ); document.write( "(c) y = x + 4
\n" ); document.write( "(d) y = –7x + 9
\n" ); document.write( "
\n" ); document.write( "

Algebra.Com's Answer #76730 by checkley75(3666)\"\" \"About 
You can put this solution on YOUR website!
A&D HAVE EQUAL SLOPES (m=-7) IN THE LINE FORMULA OF [Y=mX+b] THEREFORE THEY ARE PARALLEL. \n" ); document.write( "
\n" );