document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1107908>Question 1107908</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Given the vertex of a parabola of (4, –8) that passes through the point (2, 20), what is the vertex form of the quadratic equation? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #722960 by </B><A HREF=/tutors/aboutme.mpl?userid=TeachMath><B>TeachMath(96)</B></A><img src=\"/images/stars/stars-08.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=TeachMath><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=722960\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Vertex form: y = a(x - h)^2 + k<BR>\n" );
document.write( "             20 = a(2 - 4)^2 + - 8<BR>\n" );
document.write( "             20 = 4a - 8__4a = 28___a = 28/4 = 7\r<BR>\n" );
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document.write( "Equation: y = 7(x - 4)^2 - 8 </SPAN>\n" );
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