document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=87829>Question 87829</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I have a question that states:  are the foloowing functions inverse?  If not, rewrite the 2nd function so that it is an inverse of the 1st.<BR>\n" );
document.write( "  f(x)=3x+1<BR>\n" );
document.write( "  g(x)=3x-1/3 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #63931 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=63931\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> are the following functions inverse? <BR>\n" );
document.write( "If not, rewrite the 2nd function so that it is an inverse of the 1st.<BR>\n" );
document.write( "f(x)=3x+1<BR>\n" );
document.write( "Find the inverse, y = f(x)<BR>\n" );
document.write( "y = 3x + 1<BR>\n" );
document.write( "or<BR>\n" );
document.write( "3x + 1 = y<BR>\n" );
document.write( "Swap y for x and solve for y:<BR>\n" );
document.write( "3y + 1 = x<BR>\n" );
document.write( "3y = x - 1; subtract 1 from both sides<BR>\n" );
document.write( "y = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%28x-1%29%29%2F3 ALIGN=MIDDLE  ALT=\"%28%28x-1%29%29%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" >; divided both sides by 3<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%5E-1 ALIGN=MIDDLE  ALT=\"f%5E-1\"   DISABLED_style= \"max-width:90%; height:auto;\" >(x) = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%28x-1%29%29%2F3 ALIGN=MIDDLE  ALT=\"%28%28x-1%29%29%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "g(x)=3x-1/3; obviously this is not the inverse of,  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );