document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=180757>Question 180757</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The (x,y) is the solution set to the system 2x-y=-4<BR>\n" );
document.write( "                                            5x+9y=13, then<BR>\n" );
document.write( "a. -3 <x<0 and -5 <y<0<BR>\n" );
document.write( "b. 0<x<4 and -5 <y<0<BR>\n" );
document.write( "c. -3 <x<0 and 0<y<5<BR>\n" );
document.write( "d. 0<x<4 and 0<y<5 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #135569 by </B><A HREF=/tutors/aboutme.mpl?userid=Mathtut><B>Mathtut(3670)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Mathtut><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=135569\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The (x,y) is the solution set to the system 2x-y=-4<BR>\n" );
document.write( "                                            5x+9y=13, then<BR>\n" );
document.write( "a. -3 <x<0 and -5 <y<0<BR>\n" );
document.write( "b. 0<x<4 and -5 <y<0<BR>\n" );
document.write( "c. -3 <x<0 and 0<y<5<BR>\n" );
document.write( "d. 0<x<4 and 0<y<5\r<BR>\n" );
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document.write( "2x-y=-4.....eq 1<BR>\n" );
document.write( "5x+9y=13....eq 2<BR>\n" );
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document.write( "rewrite eq 1 to y=2x+4 and plug that value into eq 2<BR>\n" );
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document.write( "5x+9(2x+4)=13<BR>\n" );
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document.write( "5x+18x+36=13<BR>\n" );
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document.write( "23x=-23<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28x=-1%29 ALIGN=MIDDLE  ALT=\"highlight%28x=-1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "plug x's found value into eq 1 or 2 . I choose eq 1<BR>\n" );
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document.write( "2(-1)-y=-4<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28y=2%29 ALIGN=MIDDLE  ALT=\"highlight%28y=2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "so we have x=-1 and y=2<BR>\n" );
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document.write( "therefore c is the answer </SPAN>\n" );
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