document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=446830>Question 446830</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 3.	The linear equation\r<BR>\n" );
document.write( "\n" );
document.write( " y=0.15x+0.79\r<BR>\n" );
document.write( "\n" );
document.write( "represents an estimate of the average cost of gas for year x starting in 1997 (“Consumer price index,” 2006). The year 1997 would be represented by x = 1, for example, because it is the first year in the study. Similarly, 2005 would be year 9, or x = 9.\r<BR>\n" );
document.write( "\n" );
document.write( "b.	What is the slope, or rate of change, of this equation?\r<BR>\n" );
document.write( "\n" );
document.write( "c.	What is the y-intercept?\r<BR>\n" );
document.write( "\n" );
document.write( "d.	What does the y-intercept represent? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #307691 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=307691\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (b) The slope is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=.15 ALIGN=MIDDLE  ALT=\".15\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(c) The y-intercept is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=.79 ALIGN=MIDDLE  ALT=\".79\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(d) The y-intercept would be the average<BR>\n" );
document.write( "cost of gas when <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=0 ALIGN=MIDDLE  ALT=\"x=0\"   DISABLED_style= \"max-width:90%; height:auto;\" > , or for the <BR>\n" );
document.write( "year 1996, since <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=1 ALIGN=MIDDLE  ALT=\"x=1\"   DISABLED_style= \"max-width:90%; height:auto;\" > represents<BR>\n" );
document.write( "1997 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );