If the domain of f (x) = -x^2 is integer values of x such that -3 _< x < 0, find the range

Evaluate f (x) = -x^2 for x: {-2, -1}:

f(-2) = -(-2)^2 = -4, and f(-1) = -(-1)^2 = -1.

The range of this function, for the given domain, is {-4, -1).

because linear equations are a lot simpler than quadratics equations, and linear equations formula is a lot easier to memorize. that's why i think they're harder.

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