document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=119878>Question 119878</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I need your help.  I am not the greatest when it comes to solving functions.\r<BR>\n" );
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document.write( "x^2=1+y^2....is this a function or not\r<BR>\n" );
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document.write( "is this correct?\r<BR>\n" );
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document.write( "y=square root x-1<BR>\n" );
document.write( "x-1>0 or x>1<BR>\n" );
document.write( "domain [1,infin)<BR>\n" );
document.write( "range [0,infin)<BR>\n" );
document.write( "no function\r<BR>\n" );
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document.write( "Is this correct?<BR>\n" );
document.write( "y=2x-3<BR>\n" );
document.write( "2(1)-3=-1       2(2)-3=1<BR>\n" );
document.write( "domain (2,1)   range (1,-1)\r<BR>\n" );
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document.write( "Please help.<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #87848 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=87848\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> I need your help. I am not the greatest when it comes to solving functions. <BR>\n" );
document.write( "x^2=1+y^2....is this a function or not <BR>\n" );
document.write( "is this correct? <BR>\n" );
document.write( "x^2-y^2=1<BR>\n" );
document.write( "This is a hyperbola opening right and left.<BR>\n" );
document.write( "It is not a function because an x value has more than one corresponding <BR>\n" );
document.write( "y value.<BR>\n" );
document.write( "y = [sqrt(x^2-1)] or y = -[sqrt(x^2-1)]<BR>\n" );
document.write( "domain [1,infin) or (-inf,-1]<BR>\n" );
document.write( "range: All Real Numbers<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "stan H. </SPAN>\n" );
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