1. What is the Rule of Three?
2. Define the function g(x) = 2x³ – x² – 8x + 4 as Y₁ of the Y= editor. (The cube operator is in the MATH menu). Evaluate g(-2) and g(1.5) on the Home screen.
3. Graph g(x). Use the following window settings:

   Xmin = -5
   Xmax = 5
   Xscl = 1
   Ymin = -5
   Ymax = 10
   Yscl = 1
   Xres = 1

4. Use the CALCULATE Zero feature on the Graph screen to find the zeros of g(x).
5. Make a table of values for g(x). Let x start at -3 and increase by 1.
6. Use table zoom to approximate the zero between 0 and 1.

Click here to check your answers.