Find the domain and range of the quadratic function whose graph is described.
-The vertex is $( - 1 , - 5 )$ and the graph opens up.
A) Domain: $( - \infty , \infty )$
Range: $[ - 5 , \infty )$
B) Domain: $[ - 1 , \infty )$
Range: $[ - 5 , \infty )$
C) Domain: $( - \infty , \infty )$
Range: $( - \infty , - 5 ]$
D) Domain: $( - \infty , \infty )$
Range: $[ - 1 , \infty )$

Question

Quizplus · Accepted Answer

The domain of any quadratic function is all real numbers $( - \infty , \infty )$, and since the graph opens up with a vertex at $( - 1 , - 5 )$, the lowest point on the graph is $-5$, making the range $[ - 5 , \infty )$.

Find the Domain and Range of the Quadratic Function Whose (−1,−5)( - 1 , - 5 )(−1,−5)

Find the Domain and Range of the Quadratic Function Whose $( - 1 , - 5 )$