document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=204134>Question 204134</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0534463428/algebrahomeworkh></A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Hi. I really need help with an equation that needs to be graphed, also I need to find the coordinates of the vertex. The equation is y= -x^2 - 8x - 7 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #154089 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=154089\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> i. I really need help with an equation that needs to be graphed,<BR>\n" );
document.write( " also I need to find the coordinates of the vertex. <BR>\n" );
document.write( "The equation is y= -x^2 - 8x - 7<BR>\n" );
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document.write( "Plot the graph from x=-8 to x= 0; 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+-10%2C+4%2C+-10%2C+12%2C+-x%5E2-8x-7%29+ ALIGN=MIDDLE  ALT=\"+graph%28+300%2C+200%2C+-10%2C+4%2C+-10%2C+12%2C+-x%5E2-8x-7%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "Find the vertex by finding the axis of symmetry; x = -b/(2a)<BR>\n" );
document.write( "in the equation a=-1, b=-8<BR>\n" );
document.write( "x = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28-%28-8%29%29%2F%282%2A-1%29 ALIGN=MIDDLE  ALT=\"%28-%28-8%29%29%2F%282%2A-1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "x = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=8%2F%28-2%29 ALIGN=MIDDLE  ALT=\"8%2F%28-2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "x = -4 is the x coordinate of the vertex<BR>\n" );
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document.write( "Find y, substitute -4 for x in the equation<BR>\n" );
document.write( "y = -(-4^2) - 8(-4) - 7<BR>\n" );
document.write( "y = -16 + 32 - 7<BR>\n" );
document.write( "y = +9<BR>\n" );
document.write( ";<BR>\n" );
document.write( "Vertex: -4,+9 as shown on the graph<BR>\n" );
document.write( " </SPAN>\n" );
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