document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=856009>Question 856009</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the equation of the line tangent to a circle x2 + y2 = 13 at (3,-2). </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #515682 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39617)</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=515682\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> First, look for the line containing points (0,0) and (3,-2).  Assuming point (3,-2 )is also on the circle, find the line perpendicular to the just found line and containing the point (3,-2).\r<BR>\n" );
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document.write( "Something worth checking:  Is (3,-2) on the circle <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2%2By%5E2=13 ALIGN=MIDDLE  ALT=\"x%5E2%2By%5E2=13\"   DISABLED_style= \"max-width:90%; height:auto;\" >?<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3%2A3%2B%28-2%29%5E2=13 ALIGN=MIDDLE  ALT=\"3%2A3%2B%28-2%29%5E2=13\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=9%2B4=13 ALIGN=MIDDLE  ALT=\"9%2B4=13\"   DISABLED_style= \"max-width:90%; height:auto;\" >, YES.\r<BR>\n" );
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document.write( "Line (0,0) to (3,-2) is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=-%282%2F3%29x ALIGN=MIDDLE  ALT=\"y=-%282%2F3%29x\"   DISABLED_style= \"max-width:90%; height:auto;\" >;<BR>\n" );
document.write( "A line perpendicular is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=%283%2F2%29x%2Bb ALIGN=MIDDLE  ALT=\"y=%283%2F2%29x%2Bb\"   DISABLED_style= \"max-width:90%; height:auto;\" >. THIS line must contain(3,-2).<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b=y-%283%2F2%29x ALIGN=MIDDLE  ALT=\"b=y-%283%2F2%29x\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b=-2-%283%2F2%29%2A3 ALIGN=MIDDLE  ALT=\"b=-2-%283%2F2%29%2A3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b=-2-9%2F2 ALIGN=MIDDLE  ALT=\"b=-2-9%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b=-4%2F2-9%2F2 ALIGN=MIDDLE  ALT=\"b=-4%2F2-9%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b=-13%2F2 ALIGN=MIDDLE  ALT=\"b=-13%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Line tangent to circle at (3,-2) is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28y=%283%2F2%29x-13%2F2%29 ALIGN=MIDDLE  ALT=\"highlight%28y=%283%2F2%29x-13%2F2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=graph%28300%2C300%2C-6%2C6%2C-6%2C6%2C-sqrt%2813-x%5E2%29%2C%283%2F2%29x-13%2F2%29 ALIGN=MIDDLE  ALT=\"graph%28300%2C300%2C-6%2C6%2C-6%2C6%2C-sqrt%2813-x%5E2%29%2C%283%2F2%29x-13%2F2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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