document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=347103>Question 347103</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Detroit road starts in the center of the city, and Lorain road starts 4 miles west of the center of city. Both roads run southwest. If these roads are put on a coordinate plane with the center of the city at (0,0), Lorain Road  is represented by the equation  y = -x – 4 And Detroit Road is represented by the equation y  =  - x . How far away is Lorain Road from Detroit road?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #248203 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=248203\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  Detroit road starts in the center of the city, and Lorain road starts 4 miles west of the center of city. Both roads run southwest. If these roads are put on a coordinate plane with the center of the city at (0,0), Lorain Road is represented by the equation y = -x – 4 And Detroit Road is represented by the equation y = - x . How far away is Lorain Road from Detroit road?<BR>\n" );
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document.write( "Roads with those equations run southeast and northwest, assuming north is the positive y direction.<BR>\n" );
document.write( "Ignoring that:<BR>\n" );
document.write( "Since the angles with the axes are 45 degs, the distance is 4*sin(45)<BR>\n" );
document.write( "= <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4sqrt%282%29%2F2+=+2sqrt%282%29 ALIGN=MIDDLE  ALT=\"4sqrt%282%29%2F2+=+2sqrt%282%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "=~ 2.828 miles<BR>\n" );
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