document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=24119>Question 24119</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I am graphing linear eaquations. If I have a problem like ( 2x + 7y =9 ) i understand what to do; Im not geting it right after i do the domain i cant find the range and i cant plot it  plotting is easy  its just the equations<BR>\n" );
document.write( "that confuse me like finding the (x,y) coordinate after im done with the equation and ready to plot it . please help me . <BR>\n" );
document.write( "                                          thanks , <BR>\n" );
document.write( "                                              lorrie </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #12817 by </B><A HREF=/tutors/aboutme.mpl?userid=rapaljer><B>rapaljer(4671)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rapaljer><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=rapaljer><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=12817\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The domain always refers to the x numbers, and the range always refers to the y numbers.  Now, for the equation 2x+7y = 9, if you are being asked to find the domain and the range, the domain and range are both ALL REAL VALUES.  However, if you are asked to find a few points, then you pick a value of x (that would be a number in the domain!) and PLUG IT IN!  Then you would solve for y, and that would give you a number in the range.  I'm afraid all this domain and range is fine for the mathematicians but it confuses ordinary folks and makes the math seem a lot harder than it really is!!\r<BR>\n" );
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document.write( "In this example, you can pick any values for x:<BR>\n" );
document.write( "If x =0, then 0+7y = 9, so y = 9/7.<BR>\n" );
document.write( "If x = 1, then 2 + 7y = 9, so 7y = 7, y = 1<BR>\n" );
document.write( "If y = 0, then 2x + 0 = 9, so x = 9/2\r<BR>\n" );
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document.write( "This means that points are like (0, 9/7) or (1,1) or (9/2,0) are all points on this graph:\r<BR>\n" );
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document.write( "The graph looks like this if you plot these points:\r<BR>\n" );
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document.write( "R^2 at SCC </SPAN>\n" );
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