document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=71739>Question 71739</A>: <I><SPAN STYLE=\"word-break: break-all;\"> For the following parabola, find the x-axis intercepts and the<BR>\n" );
document.write( "coodinates of the vertex:\r<BR>\n" );
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document.write( "-x2 + 11x - 18\r<BR>\n" );
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document.write( "I have not a clue on how to start this,,please help me!!!<BR>\n" );
document.write( "ThAnKs! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #51293 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=51293\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> find the x-axis intercepts and the<BR>\n" );
document.write( "coodinates of the vertex: <BR>\n" );
document.write( "y = -x^2 + 11x - 18 <BR>\n" );
document.write( "Rearrange:<BR>\n" );
document.write( "x^2-11x+? =-y-18+?<BR>\n" );
document.write( "x^2-11x+(11/2)^2 = -y-(72/4)+(121/4)<BR>\n" );
document.write( "(x-(11/2))^2 = -y+49/4<BR>\n" );
document.write( "Rearrange:<BR>\n" );
document.write( "y-(49/4) =-(x-(11/2))^2<BR>\n" );
document.write( "Vertex at (11/2 , 49,4)<BR>\n" );
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document.write( "To find x intercepts, let y=0<BR>\n" );
document.write( "-x^2+11x-18 = 0<BR>\n" );
document.write( "(-x+-9)(x+2)=0<BR>\n" );
document.write( "x=-9 or x=-2<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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