Question

Which could be the entire interval over which the function, f(x), is negative?

A) (–8, –2)
B) (–8, 0)
C) (–∞, –6)
D) (–∞, –4)

Answer 1

the answer is D I just took the test 100% right

Answer 2

For this case we have a function of the form:

y = f (x)

Where,

x: independent variable

y: dependent variable

To answer the question, we must see in the table the values of the independent variable x, for which the values of the dependent variable f (x) are negative.

We have then that the interval that fulfills this condition is from minus infinity to minus 4 without including the 4.

Thus,

(–∞, –4)

Answer:

The entire interval over which the function, f(x), is negative is:

D) (–∞, –4)