document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=64978>Question 64978</A>: <I><SPAN STYLE=\"word-break: break-all;\"> On question 64722 answered by Stan which was finding the vertex of y=x^2+2x-9. I understand how to get the vertex which is (-1, -10). However, what coordinates were used to graph the parabola.. Can you please show me the coordinates and explain how I get these coordinates. Thanks for your time and help.. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #45471 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=45471\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> On question 64722 answered by Stan which was finding the vertex of y=x^2+2x-9. I understand how to get the vertex which is (-1, -10). However, what coordinates were used to graph the parabola.. Can you please show me the coordinates and explain how I get these coordinates. Thanks for your time and help..<BR>\n" );
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document.write( "f(x)=x^2+2x-9<BR>\n" );
document.write( "f(0)=0^2+2*0-9<BR>\n" );
document.write( "This gives you the point (0,-9)<BR>\n" );
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document.write( "f(3)=3^2+2*3-9=6 <BR>\n" );
document.write( "This gives you the point (3,6)<BR>\n" );
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document.write( "f(-3)=(-3)^2+2*(-3)-9=6<BR>\n" );
document.write( "This gives you the point (-3,-6)<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=graph%28300%2C200%2C-10%2C10%2C-10%2C10%2Cx%5E2%2B2x-9%29 ALIGN=MIDDLE  ALT=\"graph%28300%2C200%2C-10%2C10%2C-10%2C10%2Cx%5E2%2B2x-9%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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