document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=199905>Question 199905</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hello, I need some help here. The following problem is getting me all messed up and I am not sure what I am doing wrong. The problem is: I have to\r<BR>\n" );
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document.write( "Solve the system of equations using the substitution method.<BR>\n" );
document.write( "If the answer is a unique solution, present it as an ordered pair: (x,y). If not, specify whether the answer is \"no solution\" or \"infinitely many solutions\" and state how you arrived at that conclusion.<BR>\n" );
document.write( "-7x + y = 4<BR>\n" );
document.write( "2x + 8y = 0\r<BR>\n" );
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document.write( "Please help me!!!!!\r<BR>\n" );
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document.write( "Thank you in advance. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #150275 by </B><A HREF=/tutors/aboutme.mpl?userid=RAY100><B>RAY100(1637)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=RAY100><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=150275\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (1) -7x +y =4,,,,,,or y = 4+7x<BR>\n" );
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document.write( "(2) 2x +8y =0<BR>\n" );
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document.write( "subst  from (1)  into  (2),,  2x + 8(4+7x) =0<BR>\n" );
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document.write( "2x +32+56x =0<BR>\n" );
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document.write( "58x =-32<BR>\n" );
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document.write( "x=-32/58 = - .552<BR>\n" );
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document.write( "subst  in  (1),, y = 4 + 7(-.552) = .138<BR>\n" );
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document.write( "check  by  subst  into  originals<BR>\n" );
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document.write( "(1) -7(-.552) +(.138) =4,,,, 3.864 +.138 = 4,,,ok<BR>\n" );
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document.write( "(2) 2(-.552) +8 (.138) = -1.104 +1.104 =0,,,,,ok<BR>\n" );
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document.write( "info,  if  there  were  \" no  solutions\"  it  would  mean  that  the  lines  were \" parallel\",  and  never  intersect.  If  you  didn\"t  recognize  this  from  equal  slopes,  doing  the  math  would  result  in  a  statement  that  is  \"always  not  true\" ,  such  as  6=7<BR>\n" );
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document.write( "if  there  were  infinite  solutions,  the  lines  would  be \" coincident\" , or  lay  on  top  of  each  other.  If this  was  not  recognized  the math  would  result  in a  statement  that  is  \" always  true\", such  as  6=6. </SPAN>\n" );
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