document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=807688>Question 807688</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I don't understand how to solve or graph x-y=-2<BR>\n" );
document.write( "y=-3 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #486487 by </B><A HREF=/tutors/aboutme.mpl?userid=TimothyLamb><B>TimothyLamb(4379)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=TimothyLamb><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=TimothyLamb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=486487\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> We have two linear equations:<BR>\n" );
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document.write( "L1: x - y = -2<BR>\n" );
document.write( "L2: y = -3<BR>\n" );
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document.write( "To solve them means to find the point or points of intersection, if any, between L1 and L2.<BR>\n" );
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document.write( "Substitute -3 (the value of y from L2) for y in L1:<BR>\n" );
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document.write( "L1: x - y = -2<BR>\n" );
document.write( "L1: x - (-3) = -2<BR>\n" );
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document.write( "Now solve for x:<BR>\n" );
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document.write( "x - (-3) = -2<BR>\n" );
document.write( "x + 3 = -2<BR>\n" );
document.write( "x = -2 - 3<BR>\n" );
document.write( "x = -5<BR>\n" );
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document.write( "Now plug-in (-5) for x into L1 and solve for y:<BR>\n" );
document.write( "---<BR>\n" );
document.write( "L1: x - y = -2<BR>\n" );
document.write( "L1: (-5) - y = -2<BR>\n" );
document.write( "(-5) - y = -2<BR>\n" );
document.write( "y = (-5) + 2<BR>\n" );
document.write( "y = -3<BR>\n" );
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document.write( "Answer:<BR>\n" );
document.write( "L1 and L2 intersect at the point p0 = (-5, -3)<BR>\n" );
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document.write( "To check the answer, plug-in the point p0 into L1 and into L2.<BR>\n" );
document.write( "The point p0 satisfies both L1 and L2 so its a correct answer.<BR>\n" );
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document.write( "Solve and graph linear equations:<BR>\n" );
document.write( "https://sooeet.com/math/linear-equation-solver.php<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Solve quadratic equations, quadratic formula:<BR>\n" );
document.write( "https://sooeet.com/math/quadratic-formula-solver.php<BR>\n" );
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document.write( "Convert fractions, decimals, and percents:<BR>\n" );
document.write( "https://sooeet.com/math/fraction-decimal-percent.php<BR>\n" );
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document.write( "Calculate and graph the linear regression of any data set:<BR>\n" );
document.write( "https://sooeet.com/math/linear-regression.php </SPAN>\n" );
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