document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=106851>Question 106851</A>: <I><SPAN STYLE=\"word-break: break-all;\"> You now have had practice solving equations with one variable and equations with<BR>\n" );
document.write( "two variables. Compare equations with one variable to equations with two variables.<BR>\n" );
document.write( "How are they alike? How are they different?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #77751 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20850)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathLover1><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=MathLover1><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=77751\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> An <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=one ALIGN=MIDDLE  ALT=\"one\"   DISABLED_style= \"max-width:90%; height:auto;\" ><IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+variable ALIGN=MIDDLE  ALT=\"+variable\"   DISABLED_style= \"max-width:90%; height:auto;\" > equation is a <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=line ALIGN=MIDDLE  ALT=\"line\"   DISABLED_style= \"max-width:90%; height:auto;\" > in a <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=two-dimensional ALIGN=MIDDLE  ALT=\"two-dimensional\"   DISABLED_style= \"max-width:90%; height:auto;\" > \"space\". \r<BR>\n" );
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document.write( "Example: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+%96+5+=+3 ALIGN=MIDDLE  ALT=\"x+%96+5+=+3\"   DISABLED_style= \"max-width:90%; height:auto;\" >   =>   <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+8 ALIGN=MIDDLE  ALT=\"x+=+8\"   DISABLED_style= \"max-width:90%; height:auto;\" > this represents a <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=line ALIGN=MIDDLE  ALT=\"line\"   DISABLED_style= \"max-width:90%; height:auto;\" > <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=parallel ALIGN=MIDDLE  ALT=\"parallel\"   DISABLED_style= \"max-width:90%; height:auto;\" > to <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y-axis ALIGN=MIDDLE  ALT=\"y-axis\"   DISABLED_style= \"max-width:90%; height:auto;\" > that start from the number <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=8 ALIGN=MIDDLE  ALT=\"x=8\"   DISABLED_style= \"max-width:90%; height:auto;\" >. In fact it is a <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=constant ALIGN=MIDDLE  ALT=\"constant\"   DISABLED_style= \"max-width:90%; height:auto;\" > number.\r<BR>\n" );
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document.write( "Now, if u have a <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=two ALIGN=MIDDLE  ALT=\"two\"   DISABLED_style= \"max-width:90%; height:auto;\" ><IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+variable ALIGN=MIDDLE  ALT=\"+variable\"   DISABLED_style= \"max-width:90%; height:auto;\" > equation like <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+%2B+x+=+1 ALIGN=MIDDLE  ALT=\"y+%2B+x+=+1\"   DISABLED_style= \"max-width:90%; height:auto;\" > => <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+-x+%2B1 ALIGN=MIDDLE  ALT=\"y+=+-x+%2B1\"   DISABLED_style= \"max-width:90%; height:auto;\" > it represents the <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=linear+ ALIGN=MIDDLE  ALT=\"linear+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=equation ALIGN=MIDDLE  ALT=\"equation\"   DISABLED_style= \"max-width:90%; height:auto;\" >(also a line) in <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=two-dimensional ALIGN=MIDDLE  ALT=\"two-dimensional\"   DISABLED_style= \"max-width:90%; height:auto;\" > space.<BR>\n" );
document.write( "however, a two variable equation doesn’t have always to represent a line, it could represent quadratic equation, or circle (which make them different to one variable equations) like this equations:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2%2By%5E2=16 ALIGN=MIDDLE  ALT=\"x%5E2%2By%5E2=16\"   DISABLED_style= \"max-width:90%; height:auto;\" > is a two variable equation too, but now represents a circle.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=++y=x%5E2+ ALIGN=MIDDLE  ALT=\"++y=x%5E2+\"   DISABLED_style= \"max-width:90%; height:auto;\" > represents the quadratic equation (the graph is a parabola) in two-dimensional space.\r<BR>\n" );
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document.write( " conclusion:<BR>\n" );
document.write( "one-variable equation is  representating of a number (2D)<BR>\n" );
document.write( "two-variables  equation is representing curves in two dimensions (2D)\r<BR>\n" );
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