• If a function is defined by an equation, explain how to find its domain.

• Describe a procedure for finding (fog)(x). What is the name of this function?

• Describe the values ofxthat must be excluded from the domain (fog)(x).

• Explain how to determine if two functions are inverses of each other.

• What is the horizontal line test and what does it indicate?

• Given a function model, describe how to enter that into your graphing calculator to display the model.

• You entered a function into your graphing calculator but when you press GRAPH you get a blank screen. Explain why this may have happened and what you can do to fix it.

• Explain how to decide whether a parabola opens upward or downward.

• Describe how to find a parabola's vertex if its equation is expressed in the form
• f(x) =ax2+bx+ c.Give an example.

• A parabola that opens upward has its vertex at (1, 2). Describe as much as you can about the parabola based on this information. Include in your discussion the number ofx-intercepts (if any) for the parabola.