1. Linear functions

2. Mathematical Function? Relationship between two variables or quantities Represented by a table, graph, or equation Satisfies vertical line test

3. Linear function? For a fixed change in one variable there is a fixed change in the other variable Slope stays the same

4. Linear Function? xy 311 516 721 926 1131

5. We can do this for all of the data points, but easier to do in excel…

6. Deriving Linear Equation y = mx + b m = 2.5 Solve for b x = 3, y = 11 y = 2.5x + 3.5

7. Practice xy 220 413 66 8

8. Deception in excel

9. Activity Zero