document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=622248>Question 622248</A>: <I><SPAN STYLE=\"word-break: break-all;\"> translate to an equation b $3.00 burgers and f$1.50 fries total $12.00.graph the equation  and use the graph to determine three different combinations of burgers and fries total $12.00. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #391331 by </B><A HREF=/tutors/aboutme.mpl?userid=math-vortex><B>math-vortex(648)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=math-vortex><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=math-vortex><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=391331\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Hi, there--<BR>\n" );
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document.write( "Let B be the number of burgers purchased.<BR>\n" );
document.write( "Let F be the number of fries purchased.<BR>\n" );
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document.write( "Burgers cost $3.00 times the number of burgers purchased, or 3.00B.<BR>\n" );
document.write( "Fries cost $1.50 times the number of fries purchased, or 1.50F.<BR>\n" );
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document.write( "Together the cost of the burgers plus the cost of the fries is $12.00, so<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3.00B%2B1.50F=12.00 ALIGN=MIDDLE  ALT=\"3.00B%2B1.50F=12.00\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "To graph this equation, I would translate it to slope-intercept form (y=mx+b). Let's write it in an \"F=\" format. Subtract 3.00B from both sides of the equation to isolate the F-term.<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1.50F=12.00-3.00B ALIGN=MIDDLE  ALT=\"1.50F=12.00-3.00B\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "Divide both sides of the equation by 1.50.<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%281.50%2F1.50%29F=12.00%2F1.50-%283.00%2F1.50%29B ALIGN=MIDDLE  ALT=\"%281.50%2F1.50%29F=12.00%2F1.50-%283.00%2F1.50%29B\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=F=8-2B ALIGN=MIDDLE  ALT=\"F=8-2B\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "Rearrange the terms on the right side of the equation to get the y=mx+b form. Do this carefully, the coefficient of B is -2.<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=F=-2B%2B8 ALIGN=MIDDLE  ALT=\"F=-2B%2B8\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "The slope of this equation is -2 and the y-intercept is 8. The graph of the equation is located below.<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%0D%0Agraph%28+300%2C+200%2C+-1%2C+10%2C+-1%2C+10%2C+-2x%2B8+%29%0D%0A ALIGN=MIDDLE  ALT=\"%0D%0Agraph%28+300%2C+200%2C+-1%2C+10%2C+-1%2C+10%2C+-2x%2B8+%29%0D%0A\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "My graph shows a little bit of the line going out of Quadrant I (the upper right hand corner). Actually the line stops at the points (4,0) and (0,8) because you cannot purchase a negative number of burgers or fries.<BR>\n" );
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document.write( "We can use the graph to find three different combinations of burgers and fries totaling $12.00.We have two combinations already.<BR>\n" );
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document.write( "(4,0) means order 4 burgers and no fries. Burgers cost $3.00 so you've spent all your money on burgers.<BR>\n" );
document.write( "(0,8) means order 0 burgers and 8 fries. Fries cost $1.50 each, so you've spent all you money on fries.<BR>\n" );
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document.write( "Any other combination of burgers and fries totaling $12.00 will be found on the line. <BR>\n" );
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document.write( "(NOTE: To be completely accurate, the graph should be a series of dots rather than a straight line. because you can only purchase whole burgers and fries. The algebra.com software doesn't have an easy way to graph that.)<BR>\n" );
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document.write( "I'll leave out to you to use the graph to find a third combination. For example, if you bought two burgers, how many fries could you buy? Find that on the graph.<BR>\n" );
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document.write( "Hope this helps! Email me if there is any part that I need to explain better.<BR>\n" );
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document.write( "Ms.Figgy<BR>\n" );
document.write( "math.in.the.vortex@gmail.com </SPAN>\n" );
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