document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1074036>Question 1074036</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Write the equation for a circle with center (–9, –2) and tangent to x = –1. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #688808 by </B><A HREF=/tutors/aboutme.mpl?userid=KMST><B>KMST(5328)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=KMST><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=KMST><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=688808\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Point (-9,-2) is at <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1 ALIGN=MIDDLE  ALT=\"1\"   DISABLED_style= \"max-width:90%; height:auto;\" > unit distance from line <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=-1 ALIGN=MIDDLE  ALT=\"x=-1\"   DISABLED_style= \"max-width:90%; height:auto;\" > ,<BR>\n" );
document.write( "so the circle will be a circle of radius <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=R=1 ALIGN=MIDDLE  ALT=\"R=1\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "centered at point <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=C%28-9%2C-2%29 ALIGN=MIDDLE  ALT=\"C%28-9%2C-2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > , which has <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=system%28x%5BC%5D=-9%2Cy%5BC%5D=-2%29 ALIGN=MIDDLE  ALT=\"system%28x%5BC%5D=-9%2Cy%5BC%5D=-2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > .<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=drawing%28600%2C300%2C-14%2C6%2C-7%2C3%2Cgrid%281%29%2C%0D%0Acircle%28-9%2C-2%2C0.1%29%2Cred%28line%28-14%2C-1%2C7%2C-1%29%29%2C%0D%0Ared%28circle%28-9%2C-2%2C1%29%29%2Clocate%28-4.8%2C-1%2Cred%28x=-1%29%29%0D%0A%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "The square of the distance between circle center <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=C ALIGN=MIDDLE  ALT=\"C\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "and any circle point <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P%28x%5BP%5D%2Cy%5BP%5D%29 ALIGN=MIDDLE  ALT=\"P%28x%5BP%5D%2Cy%5BP%5D%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > is<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x-x%5BC%5D%29%5E2%2B%28y-y%5BC%5D%29%5E2=R%5E2 ALIGN=MIDDLE  ALT=\"%28x-x%5BC%5D%29%5E2%2B%28y-y%5BC%5D%29%5E2=R%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > .<BR>\n" );
document.write( "That is true for all points in any circle, with any center and any radius.<BR>\n" );
document.write( "That is the equation of a circle.<BR>\n" );
document.write( "For this circle,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x-%28-9%29%29%5E2%2B%28y-%28-2%29%29%5E2=1%5E2 ALIGN=MIDDLE  ALT=\"%28x-%28-9%29%29%5E2%2B%28y-%28-2%29%29%5E2=1%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > simplifies to<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28%28x%2B9%29%5E2%2B%28y%2B2%29%5E2=1%29 ALIGN=MIDDLE  ALT=\"highlight%28%28x%2B9%29%5E2%2B%28y%2B2%29%5E2=1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > .<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );