document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=291549>Question 291549</A>: <I><SPAN STYLE=\"word-break: break-all;\"> how can you recognize a dependent system when solving by addition?\r<BR>\n" );
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document.write( "A) look at the graph<BR>\n" );
document.write( "B) if the equation you get after substituting turns out to be incorrect, such as 0=9<BR>\n" );
document.write( "C) If the identity such as 0=0, results from addition of the equation<BR>\n" );
document.write( "D) the lines have inverse slopes<BR>\n" );
document.write( "E) Cannot be recognized using this method </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #210860 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><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=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=210860\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Selection C.\r<BR>\n" );
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document.write( "If the identity such as 0 - 0 results from addition of the equation.\r<BR>\n" );
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document.write( "An example would be identical lines.\r<BR>\n" );
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document.write( "x + y = 3<BR>\n" );
document.write( "2x + 2y = 6\r<BR>\n" );
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document.write( "These lines are identical.\r<BR>\n" );
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document.write( "Multiply the first equation by 2 and then subtract it from the second equation to get:\r<BR>\n" );
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document.write( "0 + 0 = 0 which becomes 0 = 0.\r<BR>\n" );
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document.write( "If you graph these equation, they will show up on your graph as the same line because the equations are identical.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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