Question

Consider the quadratic function f(x)=−x^2−6x−4, which has been given a restricted domain, as shown in the following graph. What is the domain of f(x)?

A) x≤−1
B) x≥−1
C) All multiples of 2
D) All real numbers

Answer 1

The domain of the quadratic function is all real numbers.

Step-by-step explanation:

The domain of a quadratic function is the set of all real numbers for which the function is defined. In this case, the function is defined for all real numbers, so the domain is all real numbers. You can see this by looking at the graph of the function, which extends infinitely in both directions along the x-axis.