document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1012245>Question 1012245</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 3.16\r<BR>\n" );
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document.write( "The function f(x)=9x+4 is one-toone.\r<BR>\n" );
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document.write( "Find an equation for f^-1(x), the inverse function.\r<BR>\n" );
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document.write( "f^-1(x)=\r<BR>\n" );
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document.write( "(Type an expression for the inverse, use integers or fractions for any numbers in the expression) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #628120 by </B><A HREF=/tutors/aboutme.mpl?userid=rothauserc><B>rothauserc(4718)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rothauserc><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=rothauserc><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=628120\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The function f(x)=9x+4 is one-to-one<BR>\n" );
document.write( "rewrite as<BR>\n" );
document.write( "y = 9x + 4<BR>\n" );
document.write( "solve for x<BR>\n" );
document.write( "9x = y - 4<BR>\n" );
document.write( "x = (y - 4) / 9<BR>\n" );
document.write( "exchange the x's and y's<BR>\n" );
document.write( "y = (x - 4) / 9, therefore<BR>\n" );
document.write( "f^-1(x) = (x - 4) / 9<BR>\n" );
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