document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=32474>Question 32474</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi, im Very confused on Linear Graphs anything to do with it. <BR>\n" );
document.write( "First here is a problem the i have that i cannot understand at all<BR>\n" );
document.write( "{2x+y=-3<BR>\n" );
document.write( "{   y= 7<BR>\n" );
document.write( " and it says \"use substitution to solve the problem\" <BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #19002 by </B><A HREF=/tutors/aboutme.mpl?userid=allamericangirl><B>allamericangirl(1)</B></A><img src=\"/images/stars/iconNewId_16x16.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=allamericangirl><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=19002\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 2x+y=-3 for y=7\r<BR>\n" );
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document.write( "step 1:substituting 7 for y gives you the equation: 2x+7=-3<BR>\n" );
document.write( "step 2:isolate the variable by subtracting 7 from both sides. what you do to one side of an equation you must also do to the other.<BR>\n" );
document.write( "step 3: the opposite of the opposite of any integer is the integer itself so we would write out -3-7as -3+(-7) and add.<BR>\n" );
document.write( "step 4:divide both sides by 2 to isolate the variable(x)<BR>\n" );
document.write( "remember the rule for dividing integers\r<BR>\n" );
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document.write( "2x+7=-3<BR>\n" );
document.write( "2x+7-7=-3-7<BR>\n" );
document.write( "2x=-3+(-7)<BR>\n" );
document.write( "2x=-10<BR>\n" );
document.write( "2x/2=-10/2<BR>\n" );
document.write( "x=-5 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );