document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=913580>Question 913580</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the vertex of each parabola and graph it.<BR>\n" );
document.write( "1. y^2+4x-6y= -1<BR>\n" );
document.write( "2. y=x^2+4x+5<BR>\n" );
document.write( "3. y=-x^2-x+1 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #554627 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=554627\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the vertex of each parabola and graph it.<BR>\n" );
document.write( "Basic equation of parabola: <BR>\n" );
document.write( "1. y^2+4x-6y= -1<BR>\n" );
document.write( "complete the square:<BR>\n" );
document.write( "(y^2-6y+9)+4x=-1+9<BR>\n" );
document.write( "(y-3)^2=-4x+8<BR>\n" );
document.write( "(y-3)^2=-4(x-2)<BR>\n" );
document.write( "Parabola opens left with vertex at(2,3)<BR>\n" );
document.write( "..<BR>\n" );
document.write( "2. y=x^2+4x+5<BR>\n" );
document.write( "complete the square:<BR>\n" );
document.write( "y=(x^2+4x+4)-4+5<BR>\n" );
document.write( "(x+2)^2=(y-1)<BR>\n" );
document.write( "Parabola opens up with vertex at(-2,1)<BR>\n" );
document.write( "..<BR>\n" );
document.write( "3. y=-x^2-x+1<BR>\n" );
document.write( "complete the square:<BR>\n" );
document.write( "y=-(x^2+x+1/4)+1/4+1<BR>\n" );
document.write( "(x+1/2)^2=-(y-5/4)<BR>\n" );
document.write( "Parabola opens down with vertex at(-1/2,5/4)\r<BR>\n" );
document.write( "\n" );
document.write( "Sorry, I don't have the means to graph these parabolas </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );