1. Questions on 1.2 HW?

2. Warm-Up  Write a rule for the function X0123 Y3579 X16141210 Y7654

3. 1.3 Represent Functions as Graphs

4. Example 1:  Graph the function y = 3x with domain 0, 1, 2, 3, and 4 Step 1: make a table Step 2: plot a point for each ordered pair.

5. X Y

6. Your Turn:  Graph the function y = -2x + 7 Domain: 1, 2, 3, 4, and 5

7. Example 2:  Write a rule for the function represented by the graph. Identify the domain and range of the function.

8. Your Turn:  Write a rule for the function represented by the graph. Identify the domain and range of the function.

9. 1.3 Homework:  P. 13 #1-14  P. 15 #7-14

10. Questions on 1.3 HW??? (p.13 and p.15)

11. Warm-up  Write a rule for the function represented by the graph.

12. 1.4 Graph Using Intercept 1.1-1.4 Quiz: Wednesday

13. Vocabulary  X-intercept: the x-coordinate of a point where a graph crosses the x-axis To find the x-intercept plug a zero in for y.  Y-intercept: the y-coordinate of a point where a graph crosses the y-axis To find the y-intercept plug a zero in for x.

14. Example 1:  Find the x- and y-intercepts of the graph 7x – 3y = 21

15. Your Turn:  Find the x- and y-intercepts for the graph of -4x + 3y = 24 y = 1/5x – 3

16. Example 2:  Identify the intercepts of the graph.

17. Your Turn:  Identify the intercepts of the graph.

18. Example 3:  Graph 3x + 2y = 6. Label the points where the line crosses the axes.

20. Your Turn:  Graph x – 1/2y = 1. Label the points where the line crosses the axes. (1,0) (-2,0)

21. 1.4 Homework  P. 19 (all problems)