document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=147159>Question 147159</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the point of intersection of the graphs of x-y=-18 and x+y=-9. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #107494 by </B><A HREF=/tutors/aboutme.mpl?userid=mangopeeler07><B>mangopeeler07(462)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mangopeeler07><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=107494\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> All you have to do to solve this problem is a little elimination.  Since in one equation 1y is positive and in the other 1y is negative, it is easy to eliminate.  Simply line x-y=-18 up to x+y=-9 and add the expression and their answers.  You should have gotten <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2x=-27 ALIGN=MIDDLE  ALT=\"2x=-27\"   DISABLED_style= \"max-width:90%; height:auto;\" >.  Then divide each side by two and get <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=-13.5 ALIGN=MIDDLE  ALT=\"x=-13.5\"   DISABLED_style= \"max-width:90%; height:auto;\" >.  Then plug x in the first equation and end up with y=4.5.  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-13.5-y=-18 ALIGN=MIDDLE  ALT=\"-13.5-y=-18\"   DISABLED_style= \"max-width:90%; height:auto;\" >.  Your solutions for x and y are the coordinates of the point of intersection of the two lines. </SPAN>\n" );
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