Question

The graph of the function f(x) = (x - 3)(x + 1) is shown.

Which describes all of the values for which the graph is
positive and decreasing?
40+
..
- 8+
C
O
O
O
all real values of x where x < -1
all real values of x where x <1
all real values of x where 1 all real values of x where x > 3
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8
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-4
810X

Answer 1

A. all real values of x where x < −1

Explanation:

in the figure attached, the graph of the function f(x) = (x - 3)(x + 1) is shown.

where x < −1, f(x) is positive and decreasing

where -1 < x < 3, f(x) is negative

where x > 3, f(x) is positive and increasing