document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=380177>Question 380177</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the equation of the tangent and normal to the conic 4x^2 + 9y^2 = 40 at point (1,-2). </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #269991 by </B><A HREF=/tutors/aboutme.mpl?userid=robertb><B>robertb(5830)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=robertb><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=robertb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=269991\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The equation of the normal line:  From the slope of the tangent line above at the specified point, 2/9, the slope of the normal line should be -9/2.  The equation of the normal line should then be <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+-+-2+=+%28-9%2F2%29%28x-1%29 ALIGN=MIDDLE  ALT=\"y+-+-2+=+%28-9%2F2%29%28x-1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+-9x%2F2+%2B+5%2F2 ALIGN=MIDDLE  ALT=\"y+=+-9x%2F2+%2B+5%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" > after simplification. </SPAN>\n" );
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