Use the drop-down menus to describe the key aspects of the function f (x) = - x2 - 2x - 1. the vertex is the. the function is increasing. the function is decreasing. the domain of the function is. the range of the function is.

The vertex is the maximum value.

The function is increasing when x<-1.

The function is decreasing when x>-1.

The domain of the function is all real numbers.

The range of the function is all numbers less than or equal to 0.

Don't worry, all those answers are correct, I just did it on edugenity. <33 work hard guys.

F (x) = - (x + 2x + 1)

f (x) = - (x + 1) ^2

The vertex is (-1, 0)

The function is increasing in the interval (-∞, - 1]

The function is decreasing in the interval [-1, ∞)

The domain of the function is all real numbers.

The range of the function is {f (x) : f (x) ∈ (-∞, - 1]}