**Day 2 – continued practice on visually seeing and determining points of intersection.**

Bellwork – find the equation of a graph

Go over homework to review 8.EE.6 retake #3

Take 8.EE.6 retake #3

Lesson:

[finish lesson from yesterday]

- What if Julio runs at half speed. What will the race look like? (Assume no head start for Rich)
- What kind of head start will he need to make it close? To win?

[Day 2 Lesson Start]

http://map.mathshell.org/download.php?fileid=1154

- Accurate Method vs. Estimation Method
- “Can you write an equation for each?”
- Graph it using Desmos.com
- “Is the estimation method close enough that it is worth using?”
- “Mathematically, why do the two equations give you close answers?”
- “Will the two equations ever give you the same answer?” “How do you know?”s
- “When do they actually give you the same answer?” Use the graph to prove it. Use math to prove it.

Closure: HW: y=2x+2 and y=3x. At what ordered pair do these two lines intersect. Make a prediction and then graph to see if your prediction is correct or not.

## So, what do you think ?