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# 8 1 Notes

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Chapter 8 Functions

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### 8 1 Notes

1. 1. Chapter 8 – Functions and Graphing 8.1 - Functions
2. 2. The “Fun”ction Machine
3. 3. Functions <ul><li>A function is a special relation in which each element of the domain is paired with exactly one element in the range. </li></ul>
4. 4. Determine whether each relation is a function. Explain. <ul><li>{(-3, -3), (-1, -1), (0, 0), (-1, 1), (3, 3)} </li></ul>b. x 7 6 5 2 -3 -6 y 2 4 6 4 2 -2
5. 5. Use the vertical line test to help determine if a relation is a function. For each value of x, a vertical line can pass through no more than one point at a time on the graph. Function Not a Function
6. 6. Graph each relation. Then determine if each relation is a function by using the vertical line test. x 1 0 4 5 y -1 0 -4 -5 x 1 0 1 2 y 4 0 -2 -4
7. 7. Questions? <ul><li>Homework: </li></ul><ul><ul><ul><li>8.1 pg 371 #4-31 </li></ul></ul></ul>