Question

Given the graph of a function below, Determine the interval in which the function has a negative value.

Answer 1

B

Explanation:

The "value" of a function is the y-value.

Since we want negative y values, we look at "WHERE" the function is "UNDER" the y-axis.

Looking closely, it looks that function (the dip) is from x = -1 to x = 3

Hence, the function is negative at the interval -1 ≤ x ≤ 3

B is correct.