1. Using slope/intercept
How do you write a linear function in slope/intercept form from a graph?
SPI:

2. Activator:
Identify the slope and the y-intercept from the equation: y = 2/5x + 2

3. Writing the slope/intercept equation from a graph
Step 1: Find the slope. You can count or you can use the slope equation (y2 – y1 / x2 – x1) using the slope equation may be the best choice.
Step 2: Find the y-intercept (where the line crosses the y-axis)
Step 3: plug your slope and y-intercept into the y=mx + b (m=slope and b= y-intercept) Remember to leave x in the equation

4. Insert video

5. Practice: Graphs to Equations on Camera

6. Graph: y = 3x - 4

9. Slope/intercept equation from ordered pairs
When you are given just a set of ordered pairs, you find the slope/intercept equation by:
Step 1: finding the slope using the slope equation
Step 2: Find the y-intercept (what do you know about the y-intercept)

10. Practice
(2,5)(0,7)
(0,4)(-5,-2)

11. Pre-Algebra pg. 111
                                                            

13. Practice Pre-Algebra wb pg. 109