Question 629281
For the function f(x)= -(x^2-x), where x is an integer, the range can be defined as: 
A. y is less than or equal to 0
B. y is greater than or equal to 0
C. y is less than 0
D. y is less than -2
E. y is less than or equal to -2
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y = -x^2+x
y = -x(x-1)
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x-intercepts are 0 and 1
Parabola opens down
Max occurs at x = -b/(2a) = -1/(2*-1) = 1/2
Max value = f(1/2) = (-1/2)((1/2)-1) = -1/2*(-1/2) = 1/4
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Range is "All Real Numbers less than of equal to 1/4.
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Note: None of your "option answers" is correct for the 
problem you posted.
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Cheers,
Stan H.