document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=173659>Question 173659</A>: <I><SPAN STYLE=\"word-break: break-all;\"> solve by substitution method: x + 3y = -8,4x - 3y = 23\r<BR>\n" );
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document.write( "solve by substitution: x - 2y = -3 and y = 2x - 3\r<BR>\n" );
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document.write( "find f(-2) given that f(s) = -x^2 - 4x + 23 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #128531 by </B><A HREF=/tutors/aboutme.mpl?userid=jojo14344><B>jojo14344(1513)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jojo14344><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=128531\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> solve by substitution method: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+%2B+3y+=+-8 ALIGN=MIDDLE  ALT=\"x+%2B+3y+=+-8\"   DISABLED_style= \"max-width:90%; height:auto;\" > EQN 1,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4x+-+3y+=+23 ALIGN=MIDDLE  ALT=\"4x+-+3y+=+23\"   DISABLED_style= \"max-width:90%; height:auto;\" >, EQN 2 <BR>\n" );
document.write( "In EQN 1 we get, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=-8-3y ALIGN=MIDDLE  ALT=\"x=-8-3y\"   DISABLED_style= \"max-width:90%; height:auto;\" >, EQN 3, subst in EQN 2:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4%28-8-3y%29-3y=23 ALIGN=MIDDLE  ALT=\"4%28-8-3y%29-3y=23\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-32-12y-3y=23 ALIGN=MIDDLE  ALT=\"-32-12y-3y=23\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-15y=23%2B32=55 ALIGN=MIDDLE  ALT=\"-15y=23%2B32=55\"   DISABLED_style= \"max-width:90%; height:auto;\" >, divide both terms by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-15 ALIGN=MIDDLE  ALT=\"-15\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28y=-3.67%29 ALIGN=MIDDLE  ALT=\"highlight%28y=-3.67%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, subst in EQN 3<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=-8-3%28-3.67%29=-8%2B11 ALIGN=MIDDLE  ALT=\"x=-8-3%28-3.67%29=-8%2B11\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28x=3%29 ALIGN=MIDDLE  ALT=\"highlight%28x=3%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Check via EQn 1:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3%2B3%28-3.67%29=-8 ALIGN=MIDDLE  ALT=\"3%2B3%28-3.67%29=-8\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3-11.01=8 ALIGN=MIDDLE  ALT=\"3-11.01=8\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-8.01=-8 ALIGN=MIDDLE  ALT=\"-8.01=-8\"   DISABLED_style= \"max-width:90%; height:auto;\" > close enough<BR>\n" );
document.write( ".<BR>\n" );
document.write( "solve by substitution: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+-+2y+=+-3 ALIGN=MIDDLE  ALT=\"x+-+2y+=+-3\"   DISABLED_style= \"max-width:90%; height:auto;\" >, EQN 4 and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+2x+-+3 ALIGN=MIDDLE  ALT=\"y+=+2x+-+3\"   DISABLED_style= \"max-width:90%; height:auto;\" >, EQN 5<BR>\n" );
document.write( "In EQN 4:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=-3%2B2y ALIGN=MIDDLE  ALT=\"x=-3%2B2y\"   DISABLED_style= \"max-width:90%; height:auto;\" >, EQN 6, subst in EQN 5:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=2%28highlight%28-3%2B2y%29%29-3 ALIGN=MIDDLE  ALT=\"y=2%28highlight%28-3%2B2y%29%29-3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=-6%2B4y-3 ALIGN=MIDDLE  ALT=\"y=-6%2B4y-3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4y-y=6%2B3 ALIGN=MIDDLE  ALT=\"4y-y=6%2B3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3y=9 ALIGN=MIDDLE  ALT=\"3y=9\"   DISABLED_style= \"max-width:90%; height:auto;\" >-----><IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cross%283%29y%2Fcross%283%29=cross%289%293%2Fcross%283%29 ALIGN=MIDDLE  ALT=\"cross%283%29y%2Fcross%283%29=cross%289%293%2Fcross%283%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28y=3%29 ALIGN=MIDDLE  ALT=\"highlight%28y=3%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, subts in EQN 6<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=-3%2B2%283%29=-3%2B6 ALIGN=MIDDLE  ALT=\"x=-3%2B2%283%29=-3%2B6\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28x=3%29 ALIGN=MIDDLE  ALT=\"highlight%28x=3%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Check via EQN 5:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3=2%283%29-3 ALIGN=MIDDLE  ALT=\"3=2%283%29-3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3=6-3 ALIGN=MIDDLE  ALT=\"3=6-3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3=3 ALIGN=MIDDLE  ALT=\"3=3\"   DISABLED_style= \"max-width:90%; height:auto;\" > good<BR>\n" );
document.write( ".<BR>\n" );
document.write( "find f(-2) given that f(s) = -x^2 - 4x + 23<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%28s%29=-%28-2%29%5E2-4%28-2%29%2B23 ALIGN=MIDDLE  ALT=\"f%28s%29=-%28-2%29%5E2-4%28-2%29%2B23\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%28s%29=-4%2B8%2B23=highlight%2827%29 ALIGN=MIDDLE  ALT=\"f%28s%29=-4%2B8%2B23=highlight%2827%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Thank you,<BR>\n" );
document.write( "Jojo </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );