document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=479533>Question 479533</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What is f&#8722;1  (-4x + 7) if f(x) = 3 – 2x? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #328539 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=328539\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> What is f^&#8722;1 (-4x + 7) if f(x) = 3 – 2x?<BR>\n" );
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document.write( "Determine f^-1(x)<BR>\n" );
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document.write( "Given y = 3-2x<BR>\n" );
document.write( "1st: Interchange x and y to get:<BR>\n" );
document.write( "x = 3-2y<BR>\n" );
document.write( "2nd: Solve for \"y\":<BR>\n" );
document.write( "2y = 3-x<BR>\n" );
document.write( "f^-1(x) = (-1/2)x + (3/2)<BR>\n" );
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document.write( "Determine f^-1(-4x+7):<BR>\n" );
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document.write( "f^-1(-4x+7) = (-1/2)(-4x+7) + (3/2)<BR>\n" );
document.write( "= 2x-(7/2)+(3/2)<BR>\n" );
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document.write( "= 2x - 2<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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