document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=127728>Question 127728</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 3X-7Y=14 (How to determine positive or negative solution) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #93839 by </B><A HREF=/tutors/aboutme.mpl?userid=JessicaGill><B>JessicaGill(40)</B></A><img src=\"/images/stars/stars-07.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=JessicaGill><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=93839\">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-7Y=14 ALIGN=MIDDLE  ALT=\"3X-7Y=14\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "First put the formula into slope intercept form to be able to graph a line for the equation.  Slope intercept formula <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=mx%2Bb ALIGN=MIDDLE  ALT=\"y=mx%2Bb\"   DISABLED_style= \"max-width:90%; height:auto;\" > with m being the slope and b being the y intercept (0,b)\r<BR>\n" );
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document.write( "First  add 7y to each side <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3x-7y%2B7y=14%2B7y ALIGN=MIDDLE  ALT=\"3x-7y%2B7y=14%2B7y\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Result <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3x=7y%2B14 ALIGN=MIDDLE  ALT=\"3x=7y%2B14\"   DISABLED_style= \"max-width:90%; height:auto;\" >  \r<BR>\n" );
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document.write( "Now subtract 14 from each side\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3x-14=7y%2B14-14 ALIGN=MIDDLE  ALT=\"3x-14=7y%2B14-14\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Result<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3x-14=7y ALIGN=MIDDLE  ALT=\"3x-14=7y\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Now divide each side by 7 to isolate the y variable.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%283x%29%2F7-%2814%2F7%29=%287%2F7%29y ALIGN=MIDDLE  ALT=\"%283x%29%2F7-%2814%2F7%29=%287%2F7%29y\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Result<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%283%2F7%29x-7=y ALIGN=MIDDLE  ALT=\"%283%2F7%29x-7=y\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Rewritten it would be <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=%283%2F7%29x-7 ALIGN=MIDDLE  ALT=\"y=%283%2F7%29x-7\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Now we know that the slope is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3%2F7 ALIGN=MIDDLE  ALT=\"3%2F7\"   DISABLED_style= \"max-width:90%; height:auto;\" > and the y intercept is (0,-7)\r<BR>\n" );
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document.write( "We need to graph the y intercept and then follow the slope to determine a new point to connect to graph the line.  Any set of ordered pairs (x and y) coordinates that fall on that line will satisfy the equation.  I am  not sure what you are asking about negative and positive solutions.  Any solution on the line that you graph will satisfy, negative and positive.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=graph%28300%2C+300%2C+-10%2C+10%2C+-10%2C+10%2C+y=%283%2F7%29x-7%29 ALIGN=MIDDLE  ALT=\"graph%28300%2C+300%2C+-10%2C+10%2C+-10%2C+10%2C+y=%283%2F7%29x-7%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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