1. Chapter 5: Graphs & Functions
Section 4 – Writing a Function Rule

2. Objectives
I can write a function rule given a table or a “real- life” situation

3. Notes Part 1: Writing a Function Rule
RELATIONSHIP #1:
Linear (y = mx + b)
First difference is the same- this is the slope!!
Find where x = 0 to get y-intercept

4. Notes Part 1: Writing a Function Rule
RELATIONSHIP #2:
Quadratic (y = x²)
Second difference is the same!!

5. Part 1: Writing a Function Rule

6. Part 1: Writing a Function Rule

7. CAN YOU?? PROVE IT!!
I can write a function rule given a table or a “real- life” situation