document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=187320>Question 187320</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Are the following lines parallel, perpendicular?<BR>\n" );
document.write( "   L1 with equation x – 2y = 4<BR>\n" );
document.write( "   L2 with equation 2x + y = 2 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #140412 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=140412\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Are the following lines parallel, perpendicular?<BR>\n" );
document.write( "L1 with equation x – 2y = 4<BR>\n" );
document.write( "slope-intercept form: y = (1/2)x -2 ; slope = 1/2<BR>\n" );
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document.write( "L2 with equation 2x + y = 2<BR>\n" );
document.write( "slope-intercept form: y = -2x + 2 ; slope = -2<BR>\n" );
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document.write( "Since -2(1/2) = -1, the lines are perpendicular.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );