Over what interval is the graph of f (x) = - (x + 8) 2 - 1 decreasing?

0 (-8, 0)

O (8, 0)

( - 0,8)

(-∞, - 8)

Question

Mathematics

Thomas Melendez

17 November, 13:44

Over what interval is the graph of f (x) = - (x + 8) 2 - 1 decreasing?

0 (-8, 0)

O (8, 0)

( - 0,8)

(-∞, - 8)

+2

Answers (1)

Know the Answer?

Yahir Salas · Answer 1

(-∞, - 8)

Step-by-step explanation:

f (x) = - (x + 8) ² - 1

This is a downwards parabola with a vertex at (-8, - 1). So f (x) is decreasing when x < - 8, or on the interval (-∞, - 8).

Over what interval is the graph of f (x) = - (x + 8) 2 - 1 decreasing?0 (-8, 0)O (8, 0)( - 0,8)(-∞, - 8)

Over what interval is the graph of f (x) = - (x + 8) 2 - 1 decreasing?

0 (-8, 0)

O (8, 0)

( - 0,8)

(-∞, - 8)