The vertex is at (-1, 0). The function is positive from (-1, ∞). The function is decreasing from (-∞, -1). The domain of the function is (-∞, ∞). The range of the function is (0, -∞).
The focus is a non-movable point, while the directrix is a non-movable line.
The equation of a quadratic function, of vertex (h, k), is given by:
y = a(x – h)² + k
where a is the leading coefficient.
The parabola function is given below.
f(x) = –(x + 1)²
The vertex is at (-1, 0). The function is positive from (-1, ∞). The function is decreasing from (-∞, -1). The domain of the function is (-∞, ∞). The range of the function is (0, -∞).
More about the parabola link is given below.
https://brainly.com/question/8495504
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