document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=325419>Question 325419</A>: <I><SPAN STYLE=\"word-break: break-all;\"> My Dad has helped me and we still can't get this last few question, please help me. I dont understand all the question. I want to get all right, not just pass\r<BR>\n" );
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document.write( "1) 5x-4y=-18 I would like to know to solve not just answer\r<BR>\n" );
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document.write( "2) -x-2y=-10 I think got 2 (-2,-4) (-1,-5)\r<BR>\n" );
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document.write( "3) -y=x+1 I just don't get this\r<BR>\n" );
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document.write( "4) 2y=3x+11 again I just not get it, </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #233030 by </B><A HREF=/tutors/aboutme.mpl?userid=Earlsdon><B>Earlsdon(6294)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Earlsdon><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=233030\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Notice that all of the given equations have two variables (x and y).<BR>\n" );
document.write( "You can't \"solve\" these equations unless you place some constraints on the variables, such as...\"x and y must be integers\"<BR>\n" );
document.write( "The given equations will have many answers, not just one.<BR>\n" );
document.write( "Here's one way to think about these:<BR>\n" );
document.write( "Suppose we were to graph the first equation: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5x-4y+=+-18 ALIGN=MIDDLE  ALT=\"5x-4y+=+-18\"   DISABLED_style= \"max-width:90%; height:auto;\" >by first solving it in terms of y.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5x-4y+=+-18 ALIGN=MIDDLE  ALT=\"5x-4y+=+-18\"   DISABLED_style= \"max-width:90%; height:auto;\" > Subtract 5x from both sides.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-4y+=+-5x-18 ALIGN=MIDDLE  ALT=\"-4y+=+-5x-18\"   DISABLED_style= \"max-width:90%; height:auto;\" > Now divide both sides by -4.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+%285%2F4%29x%2B9%2F2 ALIGN=MIDDLE  ALT=\"y+=+%285%2F4%29x%2B9%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" > Now we'll graph this:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=graph%28400%2C400%2C-5%2C5%2C-5%2C6%2C%285%2F4%29x%2B9%2F2%29 ALIGN=MIDDLE  ALT=\"graph%28400%2C400%2C-5%2C5%2C-5%2C6%2C%285%2F4%29x%2B9%2F2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "You can immediately see that the value of y depends upon which value of x you choose, so you see that there are numerous solutions to such an equation, one for every value of x you choose.<BR>\n" );
document.write( "Sometimes, when you are asked to solve equations with two variables, what is really meant is to put the given equation in terms of one of the variables as we did here:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+%285%2F4%29x%2B9%2F2 ALIGN=MIDDLE  ALT=\"y+=+%285%2F4%29x%2B9%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Sometimes you are asked to find the x- and y-intercepts of equations like this.<BR>\n" );
document.write( "You can do this by either inspecting the graph to see at which points the line intersects the axes. In this case, the x-intercept is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+-18%2F5 ALIGN=MIDDLE  ALT=\"x+=+-18%2F5\"   DISABLED_style= \"max-width:90%; height:auto;\" > and the y-intercept is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+9%2F2 ALIGN=MIDDLE  ALT=\"y+=+9%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" > or by using algebra.<BR>\n" );
document.write( " </SPAN>\n" );
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