document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=223764>Question 223764</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Suppose a parabola has a vertx (-1,8) and y-intercept 7<BR>\n" );
document.write( "How do you find the function f whose graph is this parabola and express f in the form f(x)= <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ax%5E2%2Bbx%2Bc ALIGN=MIDDLE  ALT=\"ax%5E2%2Bbx%2Bc\"   DISABLED_style= \"max-width:90%; height:auto;\" >? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #167251 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=167251\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Suppose a parabola has a vertx (-1,8) and y-intercept 7<BR>\n" );
document.write( "How do you find the function f whose graph is this parabola and express f in the form f(x)= <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ax%5E2%2Bbx%2Bc ALIGN=MIDDLE  ALT=\"ax%5E2%2Bbx%2Bc\"   DISABLED_style= \"max-width:90%; height:auto;\" >?<BR>\n" );
document.write( "-----------------------------------<BR>\n" );
document.write( "Vertex form: y-k = a(x-h)^2<BR>\n" );
document.write( "---<BR>\n" );
document.write( "h=-1,k=8, y=7 when x = 0<BR>\n" );
document.write( "--------------<BR>\n" );
document.write( "7-8 = a(0+1)^2<BR>\n" );
document.write( "-1 = a<BR>\n" );
document.write( "------------------<BR>\n" );
document.write( "Equation:<BR>\n" );
document.write( "y-8 = -1(x+1)^2<BR>\n" );
document.write( "y = -(x^2+2x+1)+8<BR>\n" );
document.write( "f(x) = -x^2-2x+7<BR>\n" );
document.write( "=======================<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=graph%28400%2C400%2C-10%2Cl0%2C-10%2C10%2C-x%5E2-2x%2B7%29 ALIGN=MIDDLE  ALT=\"graph%28400%2C400%2C-10%2Cl0%2C-10%2C10%2C-x%5E2-2x%2B7%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "=======================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );