document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=461169>Question 461169</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Breifly discuss the effect of the sign of the coefficient a on the graph of y=ax^2+bx+c. Please include two example of graph to support your thoughts one where a<0 and one where a>0. If you do not include the actual graph, please describe your examples in detail with words. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #316335 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=316335\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If \"a\" is positive the graph (parabola) opens up and has a minimum<BR>\n" );
document.write( "point at its vertex.<BR>\n" );
document.write( "Examples: y = x^2 ; y = 2x^2-4\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=graph%28400%2C300%2C-10%2C10%2C-10%2C10%2Cx%5E2%2C+2x%5E2-4%29 ALIGN=MIDDLE  ALT=\"graph%28400%2C300%2C-10%2C10%2C-10%2C10%2Cx%5E2%2C+2x%5E2-4%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "If \"a\" is negative the graph (parabola) opens down and has a <BR>\n" );
document.write( "maximum point at its vertex.<BR>\n" );
document.write( "Examples: y = -x^2 ; y = -2x^2+4<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=graph%28400%2C+300%2C-10%2C10%2C-10%2C10%2C-x%5E2%2C+-2x%5E2%2B4%29 ALIGN=MIDDLE  ALT=\"graph%28400%2C+300%2C-10%2C10%2C-10%2C10%2C-x%5E2%2C+-2x%5E2%2B4%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "----<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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