document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=208503>Question 208503</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a triangle with vertices A(-3,4), B(3,1),and C(-1,-5) is rotated 90 degrees counterclockwise about the origin.find the coordinates of A,B,and C.\r<BR>\n" );
document.write( "\n" );
document.write( "A) A(-3,-4), B(3,-1), C(-1,5)\r<BR>\n" );
document.write( "\n" );
document.write( "B) A(3,-4), B(-3,-1), C(1,5)\r<BR>\n" );
document.write( "\n" );
document.write( "C) A(4,3), B(1,-3), C(-5,1)\r<BR>\n" );
document.write( "\n" );
document.write( "D) A(-4,-3), B(-1,3), C(5,-1) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #157810 by </B><A HREF=/tutors/aboutme.mpl?userid=Edwin+McCravy><B>Edwin McCravy(20055)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Edwin+McCravy><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=Edwin+McCravy><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=157810\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <PRE STYLE=\"white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;\"><font size = 5 color = \"indigo\"><b>\r\n" );
document.write( "The point (u,v) rotated 90° counter-clockwise\r\n" );
document.write( "about the origin becomes the point (-v,u)\r\n" );
document.write( "\r\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=drawing%28400%2C400%2C-6%2C6%2C-6%2C6%2C%0D%0Alocate%283%2C1%2C%22B%283%2C1%29%22%29%2C+locate%28-3%2C4.5%2C%22A%28-3%2C4%29%22%29%2C+locate%28-2.5%2C-5%2C%22C%28-1%2C-5%29%22%29%2C%0D%0Agraph%28400%2C400%2C-6%2C6%2C-6%2C6%29%2C++%0D%0A%0D%0Ablue%28triangle%283%2C1%2C-3%2C4%2C-1%2C-5%29%29+%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" >  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=drawing%28400%2C400%2C-6%2C6%2C-6%2C6%2C%0D%0Alocate%28-2.5%2C3.5%2C%22B%28-1%2C3%29%22%29%2C+locate%28-4%2C-3%2C%22A%28-4%2C-3%29%22%29%2C+locate%284%2C-1.5%2C%22C%285%2C-1%29%22%29%2C%0D%0Agraph%28400%2C400%2C-6%2C6%2C-6%2C6%29%2C++%0D%0A%0D%0Ared%28triangle%28-1%2C3%2C-4%2C-3%2C5%2C-1%29%29+%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" >\r\n" );
document.write( "\r\n" );
document.write( "The correct answer is choice D)\r\n" );
document.write( "\r\n" );
document.write( "Edwin</PRE> </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );