document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=875357>Question 875357</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I am doing my end of course review for my final and I understand all of it except 2 questions both similar. I will place one of them below and hopefully with your help I will be able do the other one on my own. Thank you SOOO much in advance. -- Alex C<BR>\n" );
document.write( "Problem- <BR>\n" );
document.write( "Which of the linear systems has exactly one solution?<BR>\n" );
document.write( "A) 5x + 3y = -22     B) 2x + 3y = 45<BR>\n" );
document.write( "     4x - 5y = 12           2y + 4/3x = 30<BR>\n" );
document.write( "C) 2x - 3y = -15      D) x + y = 2<BR>\n" );
document.write( "     2/3x - y = 3             1/2x + 1/2y = 1\r<BR>\n" );
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document.write( "(Sorry for any typos I'm on my ipad) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #528122 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=528122\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  2x - 3y = -15  \r<BR>\n" );
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document.write( "2x-3y-15=0: let this represent a1x+b1y+c1<BR>\n" );
document.write( "a1=2,b1=-3c1=-15\r<BR>\n" );
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document.write( " x + y = 2  :\r<BR>\n" );
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document.write( "x+y-2=0 : let this represent a2x+b2y+c2=0\r<BR>\n" );
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document.write( "a2=1, b2=1,c2=-2<BR>\n" );
document.write( "if a1/a2 not equal to b1/b2 then the system has one solution\r<BR>\n" );
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document.write( "in the above problem<BR>\n" );
document.write( "2/1 = not equal to 1/1 <BR>\n" );
document.write( "hence has a unique solution\r<BR>\n" );
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document.write( " </SPAN>\n" );
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