document.write( "Question 407351: For homework I have to write in standard form, identify vertex, axis of symmetry, focus, and direction of opening, then graph also and I am lost! My problem is:
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\n" ); document.write( "y=-x(squared)-12x=20\r
\n" ); document.write( "\n" ); document.write( "Please help me. Thank you Josie \n" ); document.write( "

Algebra.Com's Answer #287163 by stanbon(75887) $\"\"$ $\"About$

You can put this solution on YOUR website!
write in standard form, identify vertex, axis of symmetry, focus, and direction of opening, then graph:
\n" ); document.write( "y = -x^2-12x=20
\n" ); document.write( "Comment: You have to many equal signs.
\n" ); document.write( "I'll just assume you mean
\n" ); document.write( "y = -x^2-12x+20
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\n" ); document.write( "Complete the square with the \"x-terms\".
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\n" ); document.write( "y-20 = -x^2-12x
\n" ); document.write( "y-20-36 = -(x^2+12x+36)
\n" ); document.write( "y-56 = -(x+6)^2
\n" ); document.write( "y = -(x+6)^2+56
\n" ); document.write( "h = -6; k = 56 ; 4p = -1, so p = -1/4
\n" ); document.write( "----
\n" ); document.write( "Vertex: (-6,56) ; axis: x = -6 ; focus: (-6,55 3/4) ; opening down
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\n" ); document.write( " $\"graph%28400%2C300%2C-10%2C10%2C-50%2C60%2C-x%5E2-12x%2B20%29\"$
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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