document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=509775>Question 509775</A>: <I><SPAN STYLE=\"word-break: break-all;\"> are the lines parallel?explain.  2x+5y= -1   and   10y= -4x-20 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #341600 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=341600\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> are the lines parallel?explain. 2x+5y= -1 and 10y= -4x-20<BR>\n" );
document.write( "**<BR>\n" );
document.write( "Write equations in standard form for straight lines: y=mx+b, m=slope, b=y-intercept<BR>\n" );
document.write( "2x+5y= -1<BR>\n" );
document.write( "5y=-2x-1<BR>\n" );
document.write( "divide by 5<BR>\n" );
document.write( "y=-2x/5-1/5<BR>\n" );
document.write( "..<BR>\n" );
document.write( "10y= -4x-20<BR>\n" );
document.write( "divide by 10<BR>\n" );
document.write( "y=-4x/10-2=-2x/5-2<BR>\n" );
document.write( "..<BR>\n" );
document.write( "As you can see, both equations have the same slope, -2/5, but different y-intercepts, so lines are parallel to each other. </SPAN>\n" );
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