document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=312635>Question 312635</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Using the equation <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+y=+a%28x-h%29%5E2%2Bk+ ALIGN=MIDDLE  ALT=\"+y=+a%28x-h%29%5E2%2Bk+\"   DISABLED_style= \"max-width:90%; height:auto;\" > how do you find the values of a and k when h=1, and you have the coordinates (2,7) and (-1,16)\r<BR>\n" );
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document.write( "At first I tried to find the slope using the coordinates, but I thought that would not work because it's not a line, but I got 10 for a, which was wrong anyway. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #223537 by </B><A HREF=/tutors/aboutme.mpl?userid=scott8148><B>scott8148(6628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=scott8148><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=scott8148><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=223537\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> substitute the two points and you have two equations with two unknowns\r<BR>\n" );
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document.write( "7 = a(2-1)^2 + k ___ 7 = a + k\r<BR>\n" );
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document.write( "16 = a(-1 -1)^2 + k ___ 16 = 4a + k\r<BR>\n" );
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document.write( "subtracting equations ___  9 = 3a  ___  3 = a\r<BR>\n" );
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document.write( "substituting  ___  7 = (3) + k  ___  4 = k </SPAN>\n" );
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