document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=709712>Question 709712</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The teacher gave out a problem that I can't understand at all.  \"Sketch a graph that compares time vs. total distance if you walked up a mountain, stopped and ate lunch and then ran down the mountain\".  She gave us a picture to write the diagram on.  It looks like a 90* angle.  Any advice would be greatly appreciated! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #436752 by </B><A HREF=/tutors/aboutme.mpl?userid=KMST><B>KMST(5347)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=KMST><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=KMST><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=436752\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=drawing%28250%2C300%2C-1%2C9%2C-1%2C11%2C%0D%0Aline%280%2C0%2C0%2C11%29%2Cline%280%2C0%2C9%2C0%29%2C%0D%0Aarrow%280%2C8%2C0%2C11%29%2Carrow%286%2C0%2C9%2C0%29%2C%0D%0Alocate%28-1%2C10.8%2Cmiles%29%2C%0D%0Alocate%287.7%2C1%2Chours%29%2C%0D%0Ablue%28line%280%2C0%2C5%2C5%29%29%2C%0D%0Ablue%28line%286%2C5%2C5%2C5%29%29%2C%0D%0Ablue%28line%286%2C5%2C8%2C10%29%29%2C%0D%0Ablue%28line%28-0.3%2C5%2C0.3%2C5%29%29%2Clocate%28-1%2C5%2C7.5%29%2C%0D%0Ablue%28line%28-0.3%2C10%2C0.3%2C10%29%29%2Clocate%28-1%2C10%2C15%29%2C%0D%0Ablue%28line%285%2C-0.3%2C5%2C0.3%29%29%2Clocate%284.1%2C-0.2%2C2.5%29%2C%0D%0Ablue%28line%286%2C-0.3%2C6%2C0.3%29%29%2Clocate%286%2C-0.2%2C3%29%2C%0D%0Ablue%28line%288%2C-0.3%2C8%2C0.3%29%29%2Clocate%288%2C-0.2%2C4%29%0D%0A%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" > Your walk up the 7.5-mile trail, at an even 3 mile per hour pace,<BR>\n" );
document.write( "is represented by the first up-sloping blue segment.<BR>\n" );
document.write( "At each point in that line the distance in miles is 3 times the time in hours.<BR>\n" );
document.write( "It is a straight line, because your speed was constant <BR>\n" );
document.write( "After 2.5 hours, the total distance covered was 7.5 miles.<BR>\n" );
document.write( "At that point you stopped to rest and eat lunch for half an hour.<BR>\n" );
document.write( "During that rest/lunch period (2.5 to 3 hours into your trip),<BR>\n" );
document.write( "the total distance covered was a constant 7.5 miles,<BR>\n" );
document.write( "and your speed was a constant zero (because you were not walking).<BR>\n" );
document.write( "The lunch/rest part is represented by the short horizontal segment.<BR>\n" );
document.write( "After lunch, for the next hour, you ran downhill down the same trail.<BR>\n" );
document.write( "Because, it was downhill,<BR>\n" );
document.write( "it was not a great effort to keep a steady 7.5 mile per hour pace<BR>\n" );
document.write( "all the way (7.5 miles) to your starting point.<BR>\n" );
document.write( "When you finished you had covered the 15 mile distance in just 4 hours.<BR>\n" );
document.write( "The steep upper blue segment represents your downhill run.<BR>\n" );
document.write( "It is a straight line because your speed was constant,<BR>\n" );
document.write( "and it is steep, because you were going fast. </SPAN>\n" );
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