document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=458297>Question 458297</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help with these difficult homework problems:\r<BR>\n" );
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document.write( "1. Find the intersection point of the two straight lines: 3x - 4y = 5 and 2x + 3y =1. Answer in lowest terms.\r<BR>\n" );
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document.write( "2. In the x-y coordinate system, the equation y = 5 represents<BR>\n" );
document.write( "(A) A point on the x-axis. <BR>\n" );
document.write( "(B) A point on the y-axis.<BR>\n" );
document.write( "(C) A vertical line. <BR>\n" );
document.write( "(D) A horizontal line.\r<BR>\n" );
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document.write( "5. (2 points) Use the Gauss-Jordan elimination method to solve the system. Enter answer in the form<BR>\n" );
document.write( "(x,y,z). DO NOT use any other method. On the test you will be asked to show all steps.<BR>\n" );
document.write( "{x + 2y - 3z = -5<BR>\n" );
document.write( "{x + 4y - 7z = -13<BR>\n" );
document.write( "{x - y + 2z= 1<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 #314382 by </B><A HREF=/tutors/aboutme.mpl?userid=robertb><B>robertb(5830)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=robertb><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=robertb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=314382\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> I will just do #2.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28matrix%283%2C4%2C1%2C2%2C-3%2C-5%2C1%2C4%2C-7%2C-13%2C1%2C-1%2C2%2C1%29%29 ALIGN=MIDDLE  ALT=\"%28matrix%283%2C4%2C1%2C2%2C-3%2C-5%2C1%2C4%2C-7%2C-13%2C1%2C-1%2C2%2C1%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "~ <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28matrix%283%2C4%2C1%2C2%2C-3%2C-5%2C0%2C1%2C-2%2C-4%2C0%2C1%2C-5%2F3%2C-2%29%29 ALIGN=MIDDLE  ALT=\"%28matrix%283%2C4%2C1%2C2%2C-3%2C-5%2C0%2C1%2C-2%2C-4%2C0%2C1%2C-5%2F3%2C-2%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, after doing -R1 + R2 and -R1 + R3\r<BR>\n" );
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document.write( "~<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28matrix%283%2C4%2C1%2C2%2C-3%2C-5%2C0%2C1%2C-2%2C-4%2C0%2C0%2C1%2F3%2C2%29%29 ALIGN=MIDDLE  ALT=\"%28matrix%283%2C4%2C1%2C2%2C-3%2C-5%2C0%2C1%2C-2%2C-4%2C0%2C0%2C1%2F3%2C2%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, after doing -R2 + R3<BR>\n" );
document.write( "~<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28matrix%283%2C4%2C1%2C2%2C-3%2C-5%2C0%2C1%2C-2%2C-4%2C0%2C0%2C1%2C6%29%29 ALIGN=MIDDLE  ALT=\"%28matrix%283%2C4%2C1%2C2%2C-3%2C-5%2C0%2C1%2C-2%2C-4%2C0%2C0%2C1%2C6%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, after 3R3.\r<BR>\n" );
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document.write( "~<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28matrix%283%2C4%2C1%2C2%2C-3%2C-5%2C0%2C1%2C0%2C8%2C0%2C0%2C1%2C6%29%29 ALIGN=MIDDLE  ALT=\"%28matrix%283%2C4%2C1%2C2%2C-3%2C-5%2C0%2C1%2C0%2C8%2C0%2C0%2C1%2C6%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >after 2R3 + R2\r<BR>\n" );
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document.write( "~<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28matrix%283%2C4%2C1%2C0%2C0%2C-3%2C0%2C1%2C0%2C8%2C0%2C0%2C1%2C6%29%29 ALIGN=MIDDLE  ALT=\"%28matrix%283%2C4%2C1%2C0%2C0%2C-3%2C0%2C1%2C0%2C8%2C0%2C0%2C1%2C6%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, after 3R3 + R1 and -2R2 + R1<BR>\n" );
document.write( "Hence x = -3, y = 8, and z = 6. </SPAN>\n" );
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