document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=638927>Question 638927</A>: <I><SPAN STYLE=\"word-break: break-all;\"> determine the quadratic function f whose vertex is (2,-4) and passes through (1,-2)\r<BR>\n" );
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document.write( "f(x)=?<BR>\n" );
document.write( "answer question in form of f(x)=ax^2+bx+c </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #402473 by </B><A HREF=/tutors/aboutme.mpl?userid=reviewermath><B>reviewermath(1029)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=reviewermath><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=reviewermath><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=402473\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> In <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+a%28x-h%29%5E2+%2B+k ALIGN=MIDDLE  ALT=\"y+=+a%28x-h%29%5E2+%2B+k\"   DISABLED_style= \"max-width:90%; height:auto;\" >, the vertex is (h,k).<BR>\n" );
document.write( "The vertex is (2, -4) therefore h = 2 and k = -4.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+a%28x-2%29%5E2+-+4 ALIGN=MIDDLE  ALT=\"y+=+a%28x-2%29%5E2+-+4\"   DISABLED_style= \"max-width:90%; height:auto;\" >, substitute (1,-2) and solve for \"a\".<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-2+=+a%281+-+2%29%5E2+-+4 ALIGN=MIDDLE  ALT=\"-2+=+a%281+-+2%29%5E2+-+4\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-2+=+a+-+4 ALIGN=MIDDLE  ALT=\"-2+=+a+-+4\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a+=+2 ALIGN=MIDDLE  ALT=\"a+=+2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+2%28x-2%29%5E2+-+4 ALIGN=MIDDLE  ALT=\"y+=+2%28x-2%29%5E2+-+4\"   DISABLED_style= \"max-width:90%; height:auto;\" >.<BR>\n" );
document.write( "Answer: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28f%28x%29+=+2x%5E2+-+8x+%2B+4%29 ALIGN=MIDDLE  ALT=\"highlight%28f%28x%29+=+2x%5E2+-+8x+%2B+4%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( " </SPAN>\n" );
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