document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=61898>Question 61898</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Some help Please\r<BR>\n" );
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document.write( "given f(x)=3x-7, find f^-1(x)\r<BR>\n" );
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document.write( "thank you for your time<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 #42692 by </B><A HREF=/tutors/aboutme.mpl?userid=chitra><B>chitra(359)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=chitra><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=42692\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The given function is: \r<BR>\n" );
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document.write( "f(x) = 3x - 7 \r<BR>\n" );
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document.write( "To find f<sup>-1</sup>(x) \r<BR>\n" );
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document.write( "Let y = f(x) = 3x - 7 \r<BR>\n" );
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document.write( "therefore,\r<BR>\n" );
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document.write( "y = 3x - 7\r<BR>\n" );
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document.write( "Now solve for \"x\" from this: \r<BR>\n" );
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document.write( "y + 7 = 3x                   [Adding 7 on both sides, we get]\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28y+%2B+7%29%2F3 ALIGN=MIDDLE  ALT=\"%28y+%2B+7%29%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" > = x             [Divide by 3] \r<BR>\n" );
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document.write( "So now, we have \r<BR>\n" );
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document.write( "x = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28y+%2B+7%29%2F3 ALIGN=MIDDLE  ALT=\"%28y+%2B+7%29%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Thus, f<sup>-1</sup>(y)= <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28y+%2B+7%29%2F3 ALIGN=MIDDLE  ALT=\"%28y+%2B+7%29%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Thus, replacing x by y, we get: \r<BR>\n" );
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document.write( "f<sup>-1</sup>(x)= <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x+%2B+7%29%2F3 ALIGN=MIDDLE  ALT=\"%28x+%2B+7%29%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Hence, the solution.\r<BR>\n" );
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