document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=23955>Question 23955</A>: <I><SPAN STYLE=\"word-break: break-all;\"> how do you know whether a problem is a function or not?? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #12657 by </B><A HREF=/tutors/aboutme.mpl?userid=rapaljer><B>rapaljer(4671)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rapaljer><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=rapaljer><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=12657\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If you can sketch the graph, then try to draw a vertical line through the graph in such a way that it crosses the graph two or more times.  If a vertical line crosses the graph in TWO or more points, then the graph is NOT a function.\r<BR>\n" );
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document.write( "From the perspective of the equation, if you can write the equation in the form y =(________), with almost anything in the blank space, then it IS a function.  However, if it comes out with a y = +-(_____) (that is a PLUS or MINUS), then it is NOT a function.  If the equation has a y^2 or y^4 or y^ (even power).  then generally, it is NOT a function.\r<BR>\n" );
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document.write( "R^2 at SCC  </SPAN>\n" );
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