document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1017092>Question 1017092</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find all k so that the graph of y = -1/4x^2 +kx  -9 is tangent to the x-axis. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #633453 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=633453\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find all k so that the graph of y = -1/4x^2 +kx  -9 is tangent to the x-axis.<BR>\n" );
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document.write( "If you mean -(1/4)x^2 +kx  -9<BR>\n" );
document.write( "--> Discriminant = 0<BR>\n" );
document.write( "k^2 - 9 = 0<BR>\n" );
document.write( "k = -3, +3<BR>\n" );
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document.write( "PS  -x^2/4 +kx  -9 is a better entry. </SPAN>\n" );
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