document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=111749>Question 111749</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0131953648/algebrahomeworkh>Blitzer college algebra</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Use the graph of y=-x^+4x+5 to answer the following: <BR>\n" );
document.write( "-x^+4x+5=0 explain how you obtain your answers by looking at the graph: <BR>\n" );
document.write( "Does this function have a maximum or minimum?\r<BR>\n" );
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document.write( "I do not understand how to look at a graph and tell anything - </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #81559 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=81559\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Use the graph of y = -x^+4x+5 to answer the following:<BR>\n" );
document.write( "-x^+4x+5= 0 explain how you obtain your answers by looking at the graph:<BR>\n" );
document.write( "Does this function have a maximum or minimum? <BR>\n" );
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document.write( "Graph Y = -x^2 + 4x + 5. substitute values of x and find y from x = -2 to x = +6<BR>\n" );
document.write( "It should look like this:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+graph%28+300%2C+200%2C+-4%2C+8%2C+-10%2C+10%2C+-x%5E2%2B4x%2B5%29+ ALIGN=MIDDLE  ALT=\"+graph%28+300%2C+200%2C+-4%2C+8%2C+-10%2C+10%2C+-x%5E2%2B4x%2B5%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "It says -x^2 = 4x + 5 = 0, Explain what values of x substituted in the equation, will give you a value of 0 for y. You can look at the graph and see that when x = -1 and when x = +5, it crosses the x axis which is y = 0<BR>\n" );
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document.write( "You can see from the graph that this function has a maximum which occurs when x=+2<BR>\n" );
document.write( "y will = 9, and this is the maximum. A good thing to remember, when the coefficient of x^2 is negative you have a maximum and when it is positive you have a minimum<BR>\n" );
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document.write( "Did this make sense to you? </SPAN>\n" );
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