1. Review: 8.1b Mini-Quiz Break-Even Analysis
A small company produces chopsticks that sell for $20 per unit. The cost of producing each unit is $5 and the company has fixed costs of $300.
(a) Use a verbal model to show that the cost C of producing x units is C = 5x and the revenue R from selling x units is R = 20x.
(b) Graph the equations and explain the solution.

2. Class Greeting

3. Chapter 8 Systems of Linear Equations and Inequalities
Lesson 8-5a
Systems of Linear Inequalities

4. Objective: The students will solve systems of linear inequalities in two variables by graphing.

5. Lesson 7 KC1

6. Step 2: Graph Graph a Linear Inequality Graph 2y – 4x > 6.
Step 1: Slope-intercept form Write the Inequality as y > mx + b.
Step 2: Graph
Graph y = 2x + 3.
Make the line dotted for > and
shade “up” for >.

7. Solve the system of inequalities by graphing.{
Answer:
Example 5-1b

8. { Write a system of inequalities that describes the green region.
Answer:
Example 5-1a

9. Lesson Summary: Objective: The students will solve systems of linear inequalities in two variables by graphing.

10. Preview of the next Lesson: Objective: Students will solve real world word problems by graphing systems of linear inequalities in two variables. .

11. Homework
/1,15,

12. Stand Up Please