document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=455706>Question 455706</A>: <I><SPAN STYLE=\"word-break: break-all;\"> how do you graph y= -2x^2+8 and how do you find the vertex and the roots<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #312860 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=312860\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> how do you graph y= -2x^2+8 and how do you find the vertex and the roots\r<BR>\n" );
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document.write( "Vertex occurs at x = -b/(2a) = -0/(-4) = 0<BR>\n" );
document.write( "f(0) = -2*0^2+8 = 8<BR>\n" );
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document.write( "Vertex: (0,8)<BR>\n" );
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document.write( "Roots = ?<BR>\n" );
document.write( "Solve -2x^2+8 = 0<BR>\n" );
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document.write( "-2(x^2-4) = 0<BR>\n" );
document.write( "x^2 - 4 = 0<BR>\n" );
document.write( "(x-2)(x+2) = 0<BR>\n" );
document.write( "x = 2 or x = -2<BR>\n" );
document.write( "Those are the roots.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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