1. Section 4.2 - Functions

2. Answer the following for each question: Does the information given constitute a function? If not, briefly justify your answer. January February March July Winter Spring Summer YES No If x = 1, y = 1 and –1

3. Ford Bush Carter Clinton President Vice-President No Ford is mapped to both President and Vice-President YES No 6 is mapped to both 5 and 3 YES No 0 is mapped to both 2 and -2 No 0 is mapped to both 4 and -4

7. Evaluating Functions on Calculator New Menu

10. Domain – All elements substituted (x) Range – All answers (y) Find the domain and range of each of the following functions: January February March July Winter Spring Summer Domain: January, February, March, July Range: Winter, Spring Summer Domain: 0, 1, 2, 3 Range: 5, 2, 4 Domain: 6, 8 Range: 5, -1, 3 Domain: Range:

11. Find the domain of each of the following functions: