document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=63312>Question 63312</A>: <I><SPAN STYLE=\"word-break: break-all;\">    Dear Tutor,\r<BR>\n" );
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document.write( "       I don't understand how to solve slope and direct variation. I really need help because I'm going to have an exam on it soon!\r<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 #44077 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=44077\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> To master slope, just think about different roofs of houses. Some are<BR>\n" );
document.write( "steep and some are not so steep. What is a simple way to describe<BR>\n" );
document.write( "\"steepness\" mathematically? It the familiar (to carpenters) <BR>\n" );
document.write( "\"rise over run\", or, in math terms, y/x. Big y and small x give you<BR>\n" );
document.write( "a very steep roof. Small y and big x give you a flatter roof.<BR>\n" );
document.write( " A way to think of negative slope is, if you walk up the west side of the roof<BR>\n" );
document.write( "that's the + slope. If you walk up the east-facing side, thats the negative<BR>\n" );
document.write( "slope.<BR>\n" );
document.write( "As for direct variation, just think of the \"rise over run\" again. The slope<BR>\n" );
document.write( "of the roof is the same whether it's expressed as 3/4, 6/8, 12/16.<BR>\n" );
document.write( "In math they sasy these numbers are related by a \"constant of variation\"<BR>\n" );
document.write( "so, 3 = 4k, 6 = 8k, 12 = 16k. k is the constant, it's the same in each<BR>\n" );
document.write( "case, and this is direct variation. Hope this helps. </SPAN>\n" );
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