document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1186177>Question 1186177</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Given the function, f(x)=4  -  5x,do the following:\r<BR>\n" );
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document.write( "1. Find its inverse<BR>\n" );
document.write( "2. Sketch the graph of the function by assigning <BR>\n" );
document.write( "values from the domain of the function. <BR>\n" );
document.write( "3. Prove that they are inverses of each other.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #817060 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39621)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=817060\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=4-5%2Af%5E%28-1%29 ALIGN=MIDDLE  ALT=\"x=4-5%2Af%5E%28-1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x-4=-5f%5E%28-1%29 ALIGN=MIDDLE  ALT=\"x-4=-5f%5E%28-1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x-4%29%2F%28-5%29=f%5E%28-1%29 ALIGN=MIDDLE  ALT=\"%28x-4%29%2F%28-5%29=f%5E%28-1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28f%5E%28-1%29=%284-x%29%2F5%29 ALIGN=MIDDLE  ALT=\"highlight%28f%5E%28-1%29=%284-x%29%2F5%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "You can now substitute 4-5x for x in the inverse formula and simplify, and see what happens.\r<BR>\n" );
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document.write( "You can also try to substitute (4-x)/5 for x IN THE ORIGINAL FORMULA for f(x), simplify and see what happens.\r<BR>\n" );
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document.write( "You can do the graphs of the lines.<BR>\n" );
document.write( "Put these on the same coordinate system:  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=system%28y=-5x%2B4%2Cand%2Cy=4%2F5-x%2F5%29 ALIGN=MIDDLE  ALT=\"system%28y=-5x%2B4%2Cand%2Cy=4%2F5-x%2F5%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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