1. 
Which of the following statements is true? > The equation y = x^{2} describes y as a function of x.

2. 
We say y = f(x) is a function of x if > there is only one possible y for each x.

3. 
Which of the following functions is bounded above but not bounded below? >

4. 
We say a function f(x) defined on the whole real line is bounded below if > There is a real number K such that f(x) ≤ K for all real x.

5. 
Which of the following statements is FALSE? > If a function is nondecreasing, that function must also be strictly increasing.

6. 
Which of the following graphs shows a function that is nonincreasing but is not strictly decreasing? >

7. 
Which of the following graphs shows an even function? >

8. 
Which of the following functions is odd? > f(x) = x + x

9. 
Which of the following statements is true? > It is possible for a function to be neither even nor odd.

10. 
Which graph shows a function that is strictly decreasing, odd, and bounded both above and below? > B
