document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=254282>Question 254282</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I am trying to help my daughter.  <BR>\n" );
document.write( "she was learning ax(squared) + bx + c = y, which she understands.\r<BR>\n" );
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document.write( "However she was given<BR>\n" );
document.write( "vertex (2, -3)<BR>\n" );
document.write( "contains points (-1,-12)<BR>\n" );
document.write( "y-k=a(x-h)squared\r<BR>\n" );
document.write( "\n" );
document.write( "she has to find \"a\"<BR>\n" );
document.write( "then plug in to the vertix form to find the ax form </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #186632 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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/cgi-bin/show-face.mpl?user=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=186632\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> given<BR>\n" );
document.write( "vertex (2, -3)<BR>\n" );
document.write( "contains points (-1,-12)<BR>\n" );
document.write( "y-k=a(x-h)squared<BR>\n" );
document.write( "she has to find \"a\"<BR>\n" );
document.write( "then plug in to the vertex form to find the ax form<BR>\n" );
document.write( ".<BR>\n" );
document.write( "The \"vertex form\" of a parabola is:<BR>\n" );
document.write( "y= a(x-h)^2+k <BR>\n" );
document.write( "http://www.mathwarehouse.com/geometry/parabola/standard-and-vertex-form.php<BR>\n" );
document.write( ".<BR>\n" );
document.write( "y-k = a(x-h)^2<BR>\n" );
document.write( "where<BR>\n" );
document.write( "(h,k) is the vertex<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Plug in what the problem gave:<BR>\n" );
document.write( "vertex (2, -3)<BR>\n" );
document.write( "contains points (-1,-12)<BR>\n" );
document.write( "y-k = a(x-h)^2<BR>\n" );
document.write( "Plugging in (2, -3) we get:<BR>\n" );
document.write( "y-(-3) = a(x-2)^2<BR>\n" );
document.write( "Plugging in our point (-1,-12)<BR>\n" );
document.write( "-12-(-3) = a(-1-2)^2<BR>\n" );
document.write( "-12+3 = a(-3)^2<BR>\n" );
document.write( "-9 = a(9)<BR>\n" );
document.write( "-1 = a </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );