Question

The function f(x) = –x2 − 2x + 15 is shown on the graph. What are the domain and range of the function?

Answer 1

Find the domain by finding where the function is defined. The range is the set of values that correspond with the domain.

Domain: ( − ∞ , ∞ ) , { x | x ∈ R }

Range: ( − ∞ , 16 ] , { y | y ≤ 16 }