1. Introduction to Functions

2. Coordinate Plane
y-axis
Origin
(0,0) x
x - axis y

3. Points in the coordinate plane are described using ordered pairs.
(x , y)
The x-coordinate tells how many units to move left or right.
The y-coordinate tells how many units to move up or down.

4. 1) A: (-2, 4) B: (5, -1) C: (4, 0) D: (0, -2)
Graph the following points on the coordinate plane.
A: (-2, 4)
B: (5, -1)
C: (4, 0)
D: (0, -2)

5. 3 1 4 2) None Name the quadrant each point lies in. A: B: C: D: B C D

6. Graphing a Function
In order to graph a function you need to generate ordered pairs.
Use your graphing Calculator to create a table.

8. Use your calculator to generate ordered pairs, then graph the function
Use your calculator to generate ordered pairs, then graph the function! You need at least 6 points!
4) y = - x - 5

9. Use your calculator to generate ordered pairs, then graph the function
Use your calculator to generate ordered pairs, then graph the function! You need at least 6 points!
5) y = x2 + 2

10. Use your calculator to generate ordered pairs, then graph the function
Use your calculator to generate ordered pairs, then graph the function! You need at least 6 points!
6) y = |x|- 3

11. Use your calculator to generate ordered pairs, then graph the function
Use your calculator to generate ordered pairs, then graph the function! You need at least 6 points!
7) y = ½ x + 1