document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1188797>Question 1188797</A>: <I><SPAN STYLE=\"word-break: break-all;\"> what is the inverse of f(x)=5-2x? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #819989 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13200)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=greenestamps><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=greenestamps><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=819989\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "For relatively simple functions like this, you can also find the inverse by using the concept that an inverse function \"un-does\" what the function does.<br><BR>\n" );
document.write( "The given function does the following to the input:<BR>\n" );
document.write( "(1) multiply by -2<BR>\n" );
document.write( "(2) add 5<br><BR>\n" );
document.write( "The inverse function needs to perform the opposite operations, in the opposite order:<BR>\n" );
document.write( "(1) subtract 5<BR>\n" );
document.write( "(2) divide by -2<br><BR>\n" );
document.write( "The inverse function is<br><BR>\n" );
document.write( "y=(x-5)/(-2)<br><BR>\n" );
document.write( "or<br><BR>\n" );
document.write( "(-1/2)x+5/2<br><BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );