document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=177190>Question 177190</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Determine if these lines are perpendicular, parallel or neither. How do I solve this problem? <BR>\n" );
document.write( "y=x+7<BR>\n" );
document.write( "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 #132245 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=132245\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Determine if these lines are perpendicular, parallel or neither. How do I solve this problem? <BR>\n" );
document.write( "y=x+7<BR>\n" );
document.write( "y=-x+2<BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "Parallel lines have the same slope.  The slopes of perpendicular lines are negative inverses.<BR>\n" );
document.write( "Both these equations are in the slope-intercept form, y = mx+b (m = slope)<BR>\n" );
document.write( "The slope of the 1st is 1.<BR>\n" );
document.write( "The slope of the 2nd is -1, so they're perpendicular.  (1 = -1/1)\r<BR>\n" );
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document.write( " </SPAN>\n" );
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