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Description

In Unit 5 you are learning to solve linear equations and inequalities. If you take the time to look, you will see that linear graphs are all around us. For example, there are graphs showing the rise and fall of temperatures across the globe. In addition, graphs can be used to show the amount of sales tax you will pay based on the purchase price of an item. Inequalities are also used on a daily basis. If you have ever set a price limit for a purchase or identified a time slot to run an errand, you have used inequalities.

**There are three parts to the Unit 5 Discussion activity.** Be sure to complete all three components to earn the most points! Click on the Discussion link located below the unit button to the left for full details and instructions.

**Linear Equations**

**Get in Line**

**Part 1:**

For the Unit 5 Discussion Board, you will create a scenario where a linear equation will be used to find the solution. After setting up your scenario, write out the linear equation for your classmates. Remember linear equations will only have one variable with an exponent of one.

Click here to see an example.

**Part 2:**

Solve a classmate’s linear equation. Include the steps showing how you arrived at the answer. Does the answer seem reasonable? Why or why not? Keep in mind that Discussion Boards are meant to be constructive exchanges. Click here to see an example.

**Part 3:**

Choose your favorite scenario posted by a classmate. Reply to that classmate telling them why their post is your favorite. Change their equation into an inequality. Choose the inequality (<, >, ≤, ≥) that makes sense for your classmate’s problem. How does this change transform the answer? Click here to see an example.

**Note:** Your responses to your classmates must be substantive and advance the Discussion. Substantive means your reply must 1) include comments specific to that particular post and 2) contain information or insight worthy of sharing with the instructor and class. Contact your instructor if you have questions about making substantive responses. MM212 College Algebra Unit 5 Discussion