document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=54434>Question 54434</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I need your help please. <BR>\n" );
document.write( "Solve the following system by substitution. If a unique solution does not exist, state whether the system is inconsistent or dependent.   8x – 4y = 16   and   y = 2x - 4 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #36689 by </B><A HREF=/tutors/aboutme.mpl?userid=tiffanyc><B>tiffanyc(9)</B></A><img src=\"/images/stars/stars-05.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=tiffanyc><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=36689\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> I'm assuming this is supposed to be solved without using matrices, if not, feel free to e-mail me and ill type up a new solution:\r<BR>\n" );
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document.write( "To solve by substitution, we need to isolate one variable and then plug the value of that variable into the second  equation:<BR>\n" );
document.write( "8x - 4y =16 <BR>\n" );
document.write( "y=2x-4<BR>\n" );
document.write( "This is saying that x and y are the same numbers for both equations so we can plug the value of y (given in equation 2) into equation 1<BR>\n" );
document.write( "8x -4(2x-4) =16<BR>\n" );
document.write( "Multiply the coefficient of y through the brackets to get:<BR>\n" );
document.write( "8x -8x +16 =16  so basically 16=16\r<BR>\n" );
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document.write( "This system is dependant, x could be either 0 or (1/2y+2) </SPAN>\n" );
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