document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=27839>Question 27839</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Using a graph to solve linear system.  -x + y = 4<BR>\n" );
document.write( "                                        x + y = 4 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #15181 by </B><A HREF=/tutors/aboutme.mpl?userid=bmauger><B>bmauger(101)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=bmauger><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=15181\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Solve both for y and then graph:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=4%2Bx ALIGN=MIDDLE  ALT=\"y=4%2Bx\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=4-x ALIGN=MIDDLE  ALT=\"y=4-x\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+graph%28200%2C+300%2C+-10%2C+10%2C+-10%2C+10%2C%0D%0A4%2Bx%2C+4-x%29 ALIGN=MIDDLE  ALT=\"+graph%28200%2C+300%2C+-10%2C+10%2C+-10%2C+10%2C%0D%0A4%2Bx%2C+4-x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "So the answer is (0, 4) or x=0, y=4. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );