document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=155853>Question 155853</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi, This is my second question regarding word problems.\r<BR>\n" );
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document.write( "I need to write an equation in either the slope-intercept form, or the standard(general)form.\r<BR>\n" );
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document.write( "I 1990, there were 4.24 million children in the united states with physical disabilities. In 1998 the number was 5.2 million.\r<BR>\n" );
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document.write( "a) Assuming that the trend is linear, write an equation relating the two, where y=number of children with physical disabilities in the u.s., and x= the number of years since 1990 (x= 0 corresponds to 1990). I think the slope for should be y=mx+b for the first part but I'm confused about how to use the numbers.\r<BR>\n" );
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document.write( "b) Use your equation to answer the following questions:<BR>\n" );
document.write( "   If this trend continues, how many children with physical disabilities would there be in the u.s in 2010?<BR>\n" );
document.write( "Thanks,   </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #114806 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=114806\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> I need to write an equation in either the slope-intercept form, or the standard(general)form. <BR>\n" );
document.write( "I 1990, there were 4.24 million children in the united states with physical disabilities. In 1998 the number was 5.2 million. <BR>\n" );
document.write( "a) Assuming that the trend is linear, write an equation relating the two, where y=number of children with physical disabilities in the u.s., and x= the number of years since 1990 (x= 0 corresponds to 1990). I think the slope for should be y=mx+b for the first part but I'm confused about how to use the numbers.<BR>\n" );
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document.write( "You have two points: (0,4.24) and (8,5.2)<BR>\n" );
document.write( "slope = (5.2-4.2)/(8-0) = 1/8<BR>\n" );
document.write( "intercept: if x = 0, y = 4.2<BR>\n" );
document.write( "EQUATION:<BR>\n" );
document.write( "n(x) = (1/8)x + 4.2<BR>\n" );
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document.write( "b) Use your equation to answer the following questions:<BR>\n" );
document.write( "If this trend continues, how many children with physical disabilities would there be in the u.s in 2010?<BR>\n" );
document.write( "In 2010, x = 10<BR>\n" );
document.write( "f(10) = (1/8)*10 + 4.2 = 5.45 million<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( " </SPAN>\n" );
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