document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=853690>Question 853690</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The directions for the question is \"Write an equation for the circle that satisfies each set of conditions.\" <BR>\n" );
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document.write( "But the actual question is, \"center (8,-9), passes through (21,22).\" I have no clue what to do or where to start please help... </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #514187 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39620)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=514187\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> CLUE:  A circle is the set of points equally distant from a specific point.  The radius is the distance between any point on the circle and the center.\r<BR>\n" );
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document.write( "STRATEGY:  Use the distance formula to find the value for the radius.  Build the equation of your circle into the standard form equation for a circle.\r<BR>\n" );
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document.write( "KNOWLEDGE:  Standard Form Equation for a circle is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x-h%29%5E2%2B%28y-k%29%5E2=r%5E2 ALIGN=MIDDLE  ALT=\"%28x-h%29%5E2%2B%28y-k%29%5E2=r%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" >, and the center is (h,k); and the radius is r.<BR>\n" );
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document.write( "Distance Formula:  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%28%28x-u%29%5E2%2B%28y-v%29%5E2%29 ALIGN=MIDDLE  ALT=\"sqrt%28%28x-u%29%5E2%2B%28y-v%29%5E2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > between points (x,y) and (u,v). </SPAN>\n" );
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