Use the drop-down menus to describe the key aspects of the function f(x) = –x2 – 2x – 1.
The vertex is the minimum valuemaximum valuey-intercept.
The function is increasing when x < –1when x > –1for all real numbers of xfor no values of x.
The function is decreasing when x < –1when x > –1for all real numbers of xfor no values of x.
The domain of the function is all real numbersall real numbers less than –1all negative real numbersall positive real numbers.
The range of the function is