document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=193144>Question 193144</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Finding an inverse formula of f(x) = 9-4x<BR>\n" );
document.write( "First I replaced f(x) with y: y=9-4x<BR>\n" );
document.write( "then i switched y with x: x=9-4y then i solved for y<BR>\n" );
document.write( "x-9 = -4y<BR>\n" );
document.write( "(x-9)/-4 = y \r<BR>\n" );
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document.write( "This is a final review exercise and the possible solutions are as follows, but none are like mine:\r<BR>\n" );
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document.write( "f-1(x) = 9+4x<BR>\n" );
document.write( "       = 1/(9-4x)<BR>\n" );
document.write( "       = (x-4)/1<BR>\n" );
document.write( "       = (9-x)/4\r<BR>\n" );
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document.write( "the fourth one would be the closest, but is not the same as I got...\r<BR>\n" );
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document.write( "What did I do wrong? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #144996 by </B><A HREF=/tutors/aboutme.mpl?userid=Earlsdon><B>Earlsdon(6294)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Earlsdon><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=144996\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Your answer is absolutely correct but in a slightly different form from the fourth entry on your list of possible answers!<BR>\n" );
document.write( "Your answer:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x-9%29%2F-4 ALIGN=MIDDLE  ALT=\"%28x-9%29%2F-4\"   DISABLED_style= \"max-width:90%; height:auto;\" > this can be arranged as follows:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%28x-9%29%29%2F-4+=+-%28%28x-9%29%29%2F4 ALIGN=MIDDLE  ALT=\"%28%28x-9%29%29%2F-4+=+-%28%28x-9%29%29%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" >=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28-x-%28-9%29%29%2F4+=+%28%28-x%2B9%29%29%2F4 ALIGN=MIDDLE  ALT=\"%28-x-%28-9%29%29%2F4+=+%28%28-x%2B9%29%29%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" >=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28%28%289-x%29%29%2F4%29 ALIGN=MIDDLE  ALT=\"highlight%28%28%289-x%29%29%2F4%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );