document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1133076>Question 1133076</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A biologist has been observing a tree’s height. 12 months into the observation, the tree was 17.74 feet tall. 18months into the observation, the tree was 18.76 feet tall Let 𝑥be the number of months passed since the observations started, and let 𝑦be the tree’s height at that time. Use a linear equation to model the tree’s height as the number of months pass. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #750258 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=750258\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A biologist has been observing a tree’s height.<BR>\n" );
document.write( " 12 months into the observation, the tree was 17.74 feet tall.<BR>\n" );
document.write( " 18 months into the observation, the tree was 18.76 feet tall<BR>\n" );
document.write( " Let 𝑥be the number of months passed since the observations started, and let 𝑦be the tree’s height at that time.<BR>\n" );
document.write( " Use a linear equation to model the tree’s height as the number of months pass.<BR>\n" );
document.write( ":<BR>\n" );
document.write( "The slope formula: m =<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%28y2-y1%29%29%2F%28%28x2-x1%29%29 ALIGN=MIDDLE  ALT=\"%28%28y2-y1%29%29%2F%28%28x2-x1%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, where<BR>\n" );
document.write( "x1 = 12; y1 = 17.74<BR>\n" );
document.write( "x2 = 18; y2 = 18.76<BR>\n" );
document.write( " m = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%2818.76-17.74%29%29%2F%28%2818-12%29%29 ALIGN=MIDDLE  ALT=\"%28%2818.76-17.74%29%29%2F%28%2818-12%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( " m = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1.02%2F6 ALIGN=MIDDLE  ALT=\"1.02%2F6\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ":<BR>\n" );
document.write( "using the point slope formula; y - y1 = m(x - x1)<BR>\n" );
document.write( "y - 17.74 = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1.02%2F6 ALIGN=MIDDLE  ALT=\"1.02%2F6\"   DISABLED_style= \"max-width:90%; height:auto;\" >(x - 12)<BR>\n" );
document.write( "using decimals here<BR>\n" );
document.write( "y - 17.74 = .17x - 2.04 <BR>\n" );
document.write( "y = .17x - 2.04 + 17.74<BR>\n" );
document.write( "y = .17x + 15.7 is the equation<BR>\n" );
document.write( " </SPAN>\n" );
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