Systems of Equations Video

**Reminder there is a quiz wednesday on the videos**

Below is the link to Part 1 of the video: Monday Night Homework

http://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-systems-topic/cc-8th-systems-overview/v/trolls--tolls--and-systems-of-equations

Below is the link to Part 2 of the video: Tuesday Night Homework

http://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-systems-topic/cc-8th-systems-overview/v/solving-the-troll-riddle-visually

Function Notation

Below is a link to an explanation of function notation and also has some example problems:


http://www.brightstorm.com/math/algebra/graphs-and-functions/function-notation-concept/

Interval Notation for Inequalities

The link below is for an explanation of interval notation:

http://www.coolmath.com/algebra/07-solving-inequalities/03-interval-notation-01.htm


Here are some examples of inequalities in interval notation:

Solving Inequalities and Graphing them on a number line

Below is a link to notes on how to graphing inequalities on a number line:

http://www.purplemath.com/modules/ineqsolv.htm



****Important notes to remember*****


^ This symbol is for and inequalities

V This symbol is for or inequalities

Intersection means and inequalities

Union means or inequalities

Systems of Linear Inequalities

Below is a video on solving systems of inequalities

In addition to the video, here is a link to an explanation of linear inequalities:


http://www.purplemath.com/modules/syslneq.htm

Graphing Linear Inequalities

Below is a video on how to graph inequalities on the graphing inequalities:

Linear Regression on Calculator

Below is a video on finding linear regression on the calculator.

Journal #5

Journal Linear Inequalities  Due Friday 12/13

Jim owns a moving company. On a particular job Jim was moving some beds and sofas, and was interested in determining how many beds and/or sofas he could load into a semi-trucks trailer. Jim knows that the trailer can hold at most 80 beds and 44 sofas. Jim also knows that the total volume of the trailer is 4000 cubic feet and that each bed takes up 50 cubic feet and each sofa takes up 90 cubic feet. Write an inequality to represent the following:

a.) How many beds the trailer can hold? Explain what this inequality represents.
b.) How many sofas the trailer can hold? Explain what this inequality represents.
c.) How many sofas and beds can fit in the total cubic feet of the trailer? Explain what this inequality represents.

Solve the system of linear inequalities by graphing. Be sure to indicate where the solution is.

Journal #4 Function Notation

Must be 150 Words, Due Friday 12/6

What is function notation? Why do we use it? What do f(x) and y have in common? Give an example of an equation in function notation and solve for a value. Explain the process.


*Extra Credit 2 points each*
Try to complete i and j on the function notation homework sheet.