document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=80511>Question 80511</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Directions: decide whether the graph of the equation opens up or down. Then find the coordinates of the vertex.as in ... y=3x^2 and/or y=2x^2-4x+3 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #57750 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=57750\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Directions: decide whether the graph of the equation opens up or down. Then find the coordinates of the vertex.as in ... y=3x^2 and/or y=2x^2-4x+3<BR>\n" );
document.write( "-----<BR>\n" );
document.write( "y= 3s^2 opens up.<BR>\n" );
document.write( "Since a=3 and b=0 the x-coordinate of the vertex = -b/2a = -0/6=0<BR>\n" );
document.write( "When x=0, y=0 so the vertex is at (0,0)<BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "y=2x^2-4x+3 opens up<BR>\n" );
document.write( "Since a=2, and b=-4, x=-b/2a = -(-4/4)=1<BR>\n" );
document.write( "When x=1, y=2-4+3=1 so the vertex is at (1,1)<BR>\n" );
document.write( "==============<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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