document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=43733>Question 43733</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 17.<BR>\n" );
document.write( " Solve the system by graphing.\r<BR>\n" );
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document.write( "            3x +   y = –1\r<BR>\n" );
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document.write( "            9x + 3y = –3\r<BR>\n" );
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document.write( " <BR>\n" );
document.write( "  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #28705 by </B><A HREF=/tutors/aboutme.mpl?userid=aaaaaaaa><B>aaaaaaaa(138)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=aaaaaaaa><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=28705\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3x%2By=-1 ALIGN=MIDDLE  ALT=\"3x%2By=-1\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=9x%2B3y=-3 ALIGN=MIDDLE  ALT=\"9x%2B3y=-3\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Let's start with the first equation, getting it as a function of y:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3x+=+-1+-+y ALIGN=MIDDLE  ALT=\"3x+=+-1+-+y\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3x+%2B+1+=+-y ALIGN=MIDDLE  ALT=\"3x+%2B+1+=+-y\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-3x+-+1+=+y ALIGN=MIDDLE  ALT=\"-3x+-+1+=+y\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Second:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=9x+%2B+3y+=+-3 ALIGN=MIDDLE  ALT=\"9x+%2B+3y+=+-3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=9x+%2B+3+=+-3y ALIGN=MIDDLE  ALT=\"9x+%2B+3+=+-3y\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-9x+-+3+=+3y ALIGN=MIDDLE  ALT=\"-9x+-+3+=+3y\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+%28-9x+-+3%29%2F3 ALIGN=MIDDLE  ALT=\"y+=+%28-9x+-+3%29%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+-3x+-+1 ALIGN=MIDDLE  ALT=\"y+=+-3x+-+1\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Are you sure the equation is right? For any value of x, we can calculate -3x - 1 to get y. See the graph, any point in it is a solution:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=graph%28600%2C+600%2C+-6%2C+6%2C+-10%2C+10%2C+-3x+-+1%29 ALIGN=MIDDLE  ALT=\"graph%28600%2C+600%2C+-6%2C+6%2C+-10%2C+10%2C+-3x+-+1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );