document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=612404>Question 612404</A>: <I><SPAN STYLE=\"word-break: break-all;\"> For the function f(x), f(2.3)= -7.2 and f(8.4)= 9.1. What is the equation for the function f(x)? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #385428 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=385428\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> For the function f(x), f(2.3)= -7.2 and f(8.4)= 9.1. What is the equation for the function f(x)?<BR>\n" );
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document.write( "slope = (9.1--7.2)/(8.4-2.3) = 16.3/6.1 = 163/61<BR>\n" );
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document.write( "Form: y = mx + b<BR>\n" );
document.write( "Solve for \"b\":<BR>\n" );
document.write( "9.1 = (163/61)8.4 + b<BR>\n" );
document.write( "b = 9.1 - 22.45 = -13.35<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "y = (163/61)x - 13.35<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "================<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );