document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=461217>Question 461217</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hello - please solve this non-function and explain why it is not a function:<BR>\n" );
document.write( "solve y2 + 4x = 8\r<BR>\n" );
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document.write( "thanks! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #316346 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=316346\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> please solve this non-function and explain why it is not a function:<BR>\n" );
document.write( "solve y2 + 4x = 8 <BR>\n" );
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document.write( "y^2 = -4x+8<BR>\n" );
document.write( "---<BR>\n" );
document.write( "y = +/-sqrt[-4x+8]<BR>\n" );
document.write( "---<BR>\n" );
document.write( "For every x-value there are 2 y-values.<BR>\n" );
document.write( "That is why it is not a function.<BR>\n" );
document.write( "===========<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "=========== </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );