Question

For the function f(x) = -2(x + 3)2 -1, identify the vertex, domain, and range. (2 points)

Answer choices

The vertex is (3, -1), the domain is all real numbers, and the range is y ≥ -1.
The vertex is (3, -1), the domain is all real numbers, and the range is y ≤ -1.
The vertex is (-3, -1), the domain is all real numbers, and the range is y ≤ -1.
The vertex is (-3, -1), the domain is all real numbers, and the range is y ≥ -1.

Answer 1

Well, what you can do is expand it out first

\[f(x) = -2(x+3)^{2}-1 => -2(x^{2}+6x+9)-1 => (-2x^{2}-12x-19)\]

Answer 2

i am so lost i don't know what after that

Answer 3

do you get the first part?