document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=56072>Question 56072</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Given f(x)=3x+4 \r<BR>\n" );
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document.write( "1. Is f(x) a function? Why or why not? \r<BR>\n" );
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document.write( "2. Is f -1(x) a function? Why or why not?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #38029 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=38029\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Given f(x)=3x+4 <BR>\n" );
document.write( "1. Is f(x) a function? Why or why not? <BR>\n" );
document.write( "Yes, it is a function because for each value of \"x\"<BR>\n" );
document.write( "there is only one value of \"y\"---the y will be 3 times<BR>\n" );
document.write( "the x value plus 4.<BR>\n" );
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document.write( "2. Is f -1(x) a function? Why or why not? <BR>\n" );
document.write( "Yes it is.  The inverse function can be found as follows:<BR>\n" );
document.write( "y=3x+4<BR>\n" );
document.write( "Interchange x and y to get:<BR>\n" );
document.write( "x=3y+4<BR>\n" );
document.write( "Solve for y to get:<BR>\n" );
document.write( "y=(1/3)x-(4/3)<BR>\n" );
document.write( "This is a function for the same reasons given<BR>\n" );
document.write( "in part #1.<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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