1. MODULE 3-3, 3-4 (MODELING FUNCTIONS) What is function notation? Writing function rules: write equations from given descriptions and evaluate for a specific value F(x), read as “f of x” Same as y = Examples: A lawyer’s fee is $180 per hour for his services. How much does he charge for 5 hours? The admission fee at a carnival is $9. Each ride costs $1.75. How much does it cost to go to the carnival and then go on 12 rides?

2. MODULE 3-3, 3-4 (MODELING FUNCTIONS) Examples

3. MODULE 3-3, 3-4 (MODELING FUNCTIONS) Choosing a reasonable domain and range: Examples Make sure numbers chosen fit the real world problem. Manuel has already sold $20 worth of tickets to the school play. He has 4 tickets left to sell for 6$ each. Create a table and find a reasonable domain and range for tickets left to sell vs money made. Graph the table.

4. MODULE 3-3, 3-4 (MODELING FUNCTIONS) Examples The temperature early in the morning is 17˚C. The temperature increases by 2˚C for every hour for the next 5 hours. Taki earns $8.50 per hour proofreading advertisements in a newspaper. He works no more than 5 hours a day.

5. MODULE 3-3, 3-4 (MODELING FUNCTIONS) Graphing y = 3x – 5 f(x) = -2x + 3 y = 3x 2