document.write( "Question 616971: please help determine where the function is increasing and where it is decreasing.\r
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Algebra.Com's Answer #388035 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!

 
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document.write( "Hi, 
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document.write( "where the function is increasing and where it is decreasing.
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document.write( "f(x) = -x^2 - 8x
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document.write( "Taking the 1st derivative:
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document.write( " f'(x) =  -2x - 8   
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document.write( " f'(x) > 0 when x < -4  and  f'(x)< 0 when x > -4
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document.write( "function is increasing when x < -4 and  is decreasing when x >-4\r
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