Algebra 2 Companion Book, Volume 1

1.2.2 Function Notation - Worksheet

Example 1: For each function, evaluate f (0), f (1.5), and f ( − 4). 1. f ( x ) = 3 x − 4 2. f ( x ) = x 2 + 9

3. f ( x ) = 3 x 2 − x + 2

4.

5.

6.

2

f

4

f

f

4

–3

3

–2

–4

2

–4

4

Example 2: Graph each function. 7. 2 3 4 5

8. g ( x ) = − 3 x + 12

9.

Length of stay (nights)

Daily rate ($)

1

65 55 45 40

5 10 15

2 5 10 17

Example 3: 10.  A furniture company misprinted a sales ad for a living room set but honors the advertised price. For each customer who purchases the living room set, the company suffers a loss of $125. Write a function to represent the company’s total loss. What is the value of the function for an input of 50, and what does it represent?

51

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