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Introduction to Functions

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Presentation on theme: "Introduction to Functions"— Presentation transcript:

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.

7

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


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