1. Objective The learner will write a function rule given a table or real-world situation.

2. Why? To learn to identify rules or patterns in real world situations like identifying profit or money earned.

3. Lesson 4-6

4. Videos Functions with Tables Functions with Graphs

5. Ask yourself, “What can I do to 1 to get 5, to 2, to get 6, ….. ?” You add 4 to each x-value to get f(x)

6. Ask yourself, “What can I do to 3 to get 9, to 6 to get 36, ….. ?” You multiply each x-value times itself to get f(x)

7. You Try!

8. Real World Problem Write a function rule for a scale model of an airplane that is 200 times smaller than the real airplane.

9. Real World Problem Suppose you borrow money from a relative to buy a lawn mower that costs $245. You charge $18 to mow a lawn. Write a rule to describe your profit as a function of the number of lawns mowed.

10. Real World Problem Suppose you buy a word- processing software package for $199. You charge $15 per hour for word processing. Write a rule to describe your profit as a function of the number of hours you work.