How do you find the domain and range of #f(y)=(y-2)^2-4 # ?

1 Answer
Joey
Jun 4, 2018

The range is (-∞,∞). The domain is (-∞,∞).

Explanation:

The range in this equation is all possible values for f(y), that do not give an imaginary result. Since no f(y) values give an imaginary result, it can be anything --> (-∞,∞).
The domain in this equation is all values of y that do not give imaginary results. Since no y values can give imaginary results, the domain is anything --> (-∞,∞).

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