document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1022367>Question 1022367</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hello. I was given these problems: x2(squared) + y = 16 <BR>\n" );
document.write( "x2(squared) + y2(squared) = 64<BR>\n" );
document.write( "and told to determine whether or not this equation \"defines y as a function of x.\" Would be very thankful for some help. Thanks for reading. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #638068 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39620)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=638068\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=system%28x%5E2%2By=16%2Cand%2Cx%5E2%2By%5E2=64%29 ALIGN=MIDDLE  ALT=\"system%28x%5E2%2By=16%2Cand%2Cx%5E2%2By%5E2=64%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Neither of them is specifically written as y in terms of x; but solving for y in terms of x will show you very clearly, if not otherwise understood, if each is a function or not.,  A vertical parabola is a function.  A circle is not a function.  Understand why! </SPAN>\n" );
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