3/17 Lesson 7.2.1 y = mx + b

1.  Warm-up:  SBAC Practice

2.  Lesson 7.2.1  y = mx + b  Revisited

• Brainstorming:  What do you know about y = mx + b?  Why is it useful?  What is it used for?  What do each of the variables stand for?
• Read Problem 35 as a class.  Clarifying questions?
• Mini-lesson:  How to complete the process on Desmos
• The customer wants a line that grows by 2 with a y-intercept of (0,2).  The customer ordered the line y = 2x + 2
• Activity to be done in pairs, not groups of 4
• Pair #1 will do A, B, C, D
• Pair #2 will do A, B, E, F

3.  Closure (10 minutes):  Pair #1 will be Line Factory workers.  Pair #2 will be the customers.  Choose ONE of the problems that you completed.  Line Factory workers will convince the customer that their answer is correct using math evidence and justification.  Then, the pairs will reverse roles.

No Homework tonight!