document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=242818>Question 242818</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve the systems of equations by graphing.\r<BR>\n" );
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document.write( "X+y=4,<BR>\n" );
document.write( "X+y=-4<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #177788 by </B><A HREF=/tutors/aboutme.mpl?userid=rapaljer><B>rapaljer(4671)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rapaljer><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=rapaljer><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=177788\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Solve for y in each equation:<BR>\n" );
document.write( " y=-x+4<BR>\n" );
document.write( "y=-x-4\r<BR>\n" );
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document.write( "Are you allowed to use a graphing calculator?  If so, there it is:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=graph%28300%2C300%2C-10%2C10%2C-10%2C10%2C-x%2B4%2C-x-4%29+ ALIGN=MIDDLE  ALT=\"graph%28300%2C300%2C-10%2C10%2C-10%2C10%2C-x%2B4%2C-x-4%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "The lines are quite obviously PARALLEL, so there is NO SOLUTION.  Sometimes this is written that the system of equations is INCONSISTENT!\r<BR>\n" );
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document.write( "Dr. Robert J. Rapalje, Retired </SPAN>\n" );
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