document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=174597>Question 174597</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Help I am unsure about this one\r<BR>\n" );
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document.write( "What is a secant line? The equation goes;\r<BR>\n" );
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document.write( "Find the equation of the secant line containing (1,f(1)) and (2,f(2)).?<BR>\n" );
document.write( "then it gives the problem:<BR>\n" );
document.write( "f(x)= 8<BR>\n" );
document.write( "      ___         or 8/x+7<BR>\n" );
document.write( "      x+7<BR>\n" );
document.write( " Can anyone shed some light on this one? Not in my book<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 #129601 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=129601\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the equation of the secant line containing (1,f(1)) and (2,f(2)).?<BR>\n" );
document.write( "then it gives the problem:<BR>\n" );
document.write( "f(x)= 8<BR>\n" );
document.write( "___ or 8/x+7<BR>\n" );
document.write( "x+7<BR>\n" );
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document.write( "A secant line is one that joins exactly two points of a curve.<BR>\n" );
document.write( "Since f(x) = 8/(x+7)<BR>\n" );
document.write( "f(1) = 8/(1+7) = 8/8 = 1<BR>\n" );
document.write( "and <BR>\n" );
document.write( "f(2) = 8/(2+7) = 8/9<BR>\n" );
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document.write( "So you have two points: (1,1) and (2,8/9)<BR>\n" );
document.write( "slope: ((8/9)-1)/(2-1)  = -1/9<BR>\n" );
document.write( "intercept: 1 = (-1/9)1 + b<BR>\n" );
document.write( "b = 10/9<BR>\n" );
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document.write( "Equation of the secant line : y = (-1/9)x + (10/9)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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