document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=604392>Question 604392</A>: <I><SPAN STYLE=\"word-break: break-all;\"> -x-3y=-9\r<BR>\n" );
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document.write( "How would this equation be graphed?  What would the value of x and the value of y be? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #381211 by </B><A HREF=/tutors/aboutme.mpl?userid=KMST><B>KMST(5328)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=KMST><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/cgi-bin/show-face.mpl?user=KMST><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=381211\">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=-x-3y=-9 ALIGN=MIDDLE  ALT=\"-x-3y=-9\"   DISABLED_style= \"max-width:90%; height:auto;\" > is a linear equation.<BR>\n" );
document.write( "For linear equations, the graph is a straight line.<BR>\n" );
document.write( "To draw them you just need to determine 2 points, plot them, and connect them with a straight line.<BR>\n" );
document.write( "I try to chose points that make the calculations easy and the graph \"pretty\".<BR>\n" );
document.write( "If I am lucky, the point with x=0 and the point with y=0 will do.<BR>\n" );
document.write( "Because I do not like to mess with so many minus signs, I will first multiply both sides of <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-x-3y=-9 ALIGN=MIDDLE  ALT=\"-x-3y=-9\"   DISABLED_style= \"max-width:90%; height:auto;\" > times <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28-1%29 ALIGN=MIDDLE  ALT=\"%28-1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > to get the equivalent equation<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2B3y=9 ALIGN=MIDDLE  ALT=\"x%2B3y=9\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "With x=0, we get <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0%2B3y=9 ALIGN=MIDDLE  ALT=\"0%2B3y=9\"   DISABLED_style= \"max-width:90%; height:auto;\" > --> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3y=9 ALIGN=MIDDLE  ALT=\"3y=9\"   DISABLED_style= \"max-width:90%; height:auto;\" > --> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3y%2F3=9%2F3 ALIGN=MIDDLE  ALT=\"3y%2F3=9%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" > --> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=3 ALIGN=MIDDLE  ALT=\"y=3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "That gives us the point (0,3)<BR>\n" );
document.write( "With y=0, we get <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2B3%2A0=9 ALIGN=MIDDLE  ALT=\"x%2B3%2A0=9\"   DISABLED_style= \"max-width:90%; height:auto;\" > --> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2B0=9 ALIGN=MIDDLE  ALT=\"x%2B0=9\"   DISABLED_style= \"max-width:90%; height:auto;\" > --> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=9 ALIGN=MIDDLE  ALT=\"x=9\"   DISABLED_style= \"max-width:90%; height:auto;\" > for the point (9,0).<BR>\n" );
document.write( "So we plot the points and connect them to get<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=drawing%28300%2C300%2C-3%2C12%2C-5%2C10%2C%0D%0Agrid%281%29%2C+blue%28circle%280%2C3%2C0.3%29%29%2C%0D%0Ablue%28circle%289%2C0%2C0.3%29%29%2Cblue%28line%28-3%2C4%2C12%2C-1%29%29%0D%0A%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( " </SPAN>\n" );
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