Zachariah Ward

Mathematics

24 July, 08:33

The graph of the function f (x) = (x - 4) (x + 1) is shown below.

On a coordinate plane, a parabola opens up. It goes through (negative 1, 0), has a vertex at (1.75, negative 6.2), and goes through (4, 0).

Which statement about the function is true?

The function is increasing for all real values of x where

x < 0.

The function is increasing for all real values of x where

x 4.

The function is decreasing for all real values of x where

-1 < x < 4.

The function is decreasing for all real values of x where

x < 1.5.