In this lesson, we will learn how to determine the sign of a function from its equation or graph.

Students will be able to

Q1:

Which of the following correctly describes the interval over which the illustrated function is negative?

Q2:

Determine the sign of the function represented by the figure below in ℝ.

Q3:

In which of the following intervals is 𝑓(𝑥)=−8 negative?

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