document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1166940>Question 1166940</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Each week 5 new office phones are installed in a major network company. At the beginning of March, 200 phones had already been installed. Write a linear equation to model this situation. Do not use spaces in the equation.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #791511 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><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=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=791511\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> the linear equation is y=m*x+b<BR>\n" );
document.write( "m is the slope.<BR>\n" );
document.write( "b is the y-intercept.\r<BR>\n" );
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document.write( "in this problem:<BR>\n" );
document.write( "y = the total number of phones that are installed<BR>\n" );
document.write( "x = the number of weeks from march 1.\r<BR>\n" );
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document.write( "on march 1, x = 0.<BR>\n" );
document.write( "this makes the y-intercept of the equation equal to 200 because the y-intercept is the value of y when x = 0.<BR>\n" );
document.write( "when x = 0, the equation becomes y = m*0 + b which simplifies to y = b.<BR>\n" );
document.write( "the equation becomes y=m*x+200<BR>\n" );
document.write( "each week, 5 new phones are installed.<BR>\n" );
document.write( "this makes m = 5.<BR>\n" );
document.write( "the equation becomes y=5x+200\r<BR>\n" );
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document.write( "that should be your solution.<BR>\n" );
document.write( "when x = 0, y = 200<BR>\n" );
document.write( "when x = 1, y = 205<BR>\n" );
document.write( "when x = 2, y = 210<BR>\n" );
document.write( "when x = 10, y = 250<BR>\n" );
document.write( "etc.....\r<BR>\n" );
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document.write( "x = 0 means march 1.<BR>\n" );
document.write( "x = 1 means 1 week after march 1.<BR>\n" );
document.write( "x = 2 means 2 weeks after march 1.<BR>\n" );
document.write( "x = 10 means 10 weeks after march 1.<BR>\n" );
document.write( "etc.....\r<BR>\n" );
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document.write( "the equation can be graphed as shown below.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" src = \"http://theo.x10hosting.com/2020/101002.jpg\" >\r<BR>\n" );
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document.write( "the actual dates can be found as follows:<BR>\n" );
document.write( "x = 0 is march 1<BR>\n" );
document.write( "x = 1 is march 8<BR>\n" );
document.write( "x = 2 is march 15<BR>\n" );
document.write( "x = 10 is may 10<BR>\n" );
document.write( "etc.....\r<BR>\n" );
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document.write( "you just look at the calendar and count the weeks from march 1.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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