document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=937344>Question 937344</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Graph the inequalities of 9x+8y<72 and -7x-4y<=28 to find their solution set. Also find there point of intersection from shading  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #570958 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=570958\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> point of intersection:<BR>\n" );
document.write( "9x+8y=72<BR>\n" );
document.write( "-7x-4y=28<BR>\n" );
document.write( "---<BR>\n" );
document.write( "put the system of linear equations into standard form<BR>\n" );
document.write( "---<BR>\n" );
document.write( "9x+8y=72<BR>\n" );
document.write( "-7x-4y=28<BR>\n" );
document.write( "---<BR>\n" );
document.write( "copy and paste the above standard form linear equations in to this solver:<BR>\n" );
document.write( "https://sooeet.com/math/system-of-linear-equations-solver.php<BR>\n" );
document.write( "---<BR>\n" );
document.write( "solution:<BR>\n" );
document.write( "x = -25.6<BR>\n" );
document.write( "y = 37.8<BR>\n" );
document.write( "---<BR>\n" );
document.write( "as for graphing:<BR>\n" );
document.write( "---<BR>\n" );
document.write( "line A:<BR>\n" );
document.write( "9x + 8y < 72<BR>\n" );
document.write( "8y < -9x + 72<BR>\n" );
document.write( "y < (-9/8)x + 9<BR>\n" );
document.write( "---<BR>\n" );
document.write( "line B:<BR>\n" );
document.write( "-7x - 4y <= 28<BR>\n" );
document.write( "-4y <= 7x + 28<BR>\n" );
document.write( "y >= -7/4x - 7<BR>\n" );
document.write( "---<BR>\n" );
document.write( "both lines have negative slope but line B has steeper negative slope, and is below line A to the right of the point of intersection<BR>\n" );
document.write( "---<BR>\n" );
document.write( "the solution set is line B including the point of intersection, and the space to the right of the point of intersection and between both lines but not including line A<BR>\n" );
document.write( "---<BR>\n" );
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document.write( "---<BR>\n" );
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document.write( "---<BR>\n" );
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document.write( "--- </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );