document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=235039>Question 235039</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What is the formula to find out if the equations are parallel, perpendicular, or neither?    y = 3x – 1, y = –x + 2 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #173271 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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/cgi-bin/show-face.mpl?user=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=173271\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> What is the formula to find out if the equations are parallel, perpendicular, or neither? y = 3x – 1, y = –x + 2<BR>\n" );
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document.write( "There's no formula, there's a method.<BR>\n" );
document.write( "Find the slope of each line, m.<BR>\n" );
document.write( "if the slopes are:<BR>\n" );
document.write( "equal they're parallel<BR>\n" );
document.write( "negative reciprocals they're perpendicular<BR>\n" );
document.write( "anything else, neither.<BR>\n" );
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document.write( "y = 3x – 1 slope = 3<BR>\n" );
document.write( "y = –x + 2 slope = -1<BR>\n" );
document.write( "These are not parallel and not perpendicular.\r<BR>\n" );
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