document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=140634>Question 140634</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me solve the equation, f(x) = 2x-5 divided by x+4, find f-1(x).  This is a problem which the teacher created from this section of the book.  Thank you for your help and assistance.  Gary </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #102512 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=102512\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> f(x) = 2x-5 divided by x+4, find f-1(x).<BR>\n" );
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document.write( "f(x) = y<BR>\n" );
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document.write( "y = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%282x-5%29%2F%28x%2B4%29 ALIGN=MIDDLE  ALT=\"%282x-5%29%2F%28x%2B4%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "solve for x:<BR>\n" );
document.write( "Multiply both sides by (x+4)<BR>\n" );
document.write( "2x - 5 = y(x+4)<BR>\n" );
document.write( "2x - 5 = xy + 4y<BR>\n" );
document.write( "2x = xy + 4y + 5<BR>\n" );
document.write( "2x - xy = 4y + 5<BR>\n" );
document.write( "x(2-y) = 4y + 5<BR>\n" );
document.write( "x = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%284y%2B5%29%2F%282-y%29 ALIGN=MIDDLE  ALT=\"%284y%2B5%29%2F%282-y%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "To find the inverse, swap x and y:<BR>\n" );
document.write( "y = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%284x%2B5%29%2F%282-x%29 ALIGN=MIDDLE  ALT=\"%284x%2B5%29%2F%282-x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "f-1(x) = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%284x%2B5%29%2F%282-x%29 ALIGN=MIDDLE  ALT=\"%284x%2B5%29%2F%282-x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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