document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=938729>Question 938729</A>: <I><SPAN STYLE=\"word-break: break-all;\"> find the equation of a circle with center at (-4,2) and tangent to the line 2x-y+2=0 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #571912 by </B><A HREF=/tutors/aboutme.mpl?userid=ewatrrr><B>ewatrrr(24785)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ewatrrr><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=ewatrrr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=571912\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Circle: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x%2B4%29%5E2+%2B+%28y-2%29%5E2+=+r%5E2 ALIGN=MIDDLE  ALT=\"%28x%2B4%29%5E2+%2B+%28y-2%29%5E2+=+r%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "tangent to...<BR>\n" );
document.write( "y = 2x + 2<BR>\n" );
document.write( "...<BR>\n" );
document.write( "Line perpendicular thru C(-4,2)<BR>\n" );
document.write( "y - 2 = (-1/2)(x + 4)<BR>\n" );
document.write( "y = (-1/2)x<BR>\n" );
document.write( "...<BR>\n" );
document.write( "(-1/2)x = 2x + 2<BR>\n" );
document.write( "-2 = (5/2)x<BR>\n" );
document.write( "(-4/5) = x  and y = 2/5 <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28-1%2F2%29%28-4%2F5%29 ALIGN=MIDDLE  ALT=\"%28-1%2F2%29%28-4%2F5%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "...<BR>\n" );
document.write( "C(-4,2)<BR>\n" );
document.write( "(-4/5, 2/5) <BR>\n" );
document.write( "r^2 = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28x%5B1%5D-x%5B2%5D%29%5E2%2B+%28y%5B1%5D-y%5B2%5D%29%5E2++ ALIGN=MIDDLE  ALT=\"+%28x%5B1%5D-x%5B2%5D%29%5E2%2B+%28y%5B1%5D-y%5B2%5D%29%5E2++\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "...<BR>\n" );
document.write( "r^2 = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28-16%2F5%29%5E2+%2B+%288%2F5%29%5E2 ALIGN=MIDDLE  ALT=\"%28-16%2F5%29%5E2+%2B+%288%2F5%29%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 320/25<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x%2B4%29%5E2+%2B+%28y-2%29%5E2+=+r%5E2 ALIGN=MIDDLE  ALT=\"%28x%2B4%29%5E2+%2B+%28y-2%29%5E2+=+r%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=drawing%28300%2C300%2C++++-10%2C10%2C-10%2C10%2C+++%0D%0A+grid%281%29%2C%0D%0Acircle%28-4%2C2%2C0.4%29%2C%0D%0Acircle%28-.8%2C+.4%2C.4%29%2C%0D%0Agraph%28+300%2C+300%2C+-10%2C10%2C-10%2C10%2C0%2C+2x%2B2%2C+-.5x%29%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );