Unit+3

__ 3.1: __
**[|Graphing Simple Inequalities]** After watching the video above on graphing, you need to match the inequality statements below in the document below with their corresponding graphs.

**[|3.1 wikispace journal.doc]**

In your wikispace journal, explain your entire thought process (from your first match to your last) and how you narrowed down the choices and knew which graph matched which inequality statement.

**Answer:**

__** 3.2: **__

__**Summarize what we did in class today.**__ Explain what similar features are shown in the graph x>5 as you would graph it on a number line and x>5 as you would graph it on a coordinate plane. Also explain the similarities of x<=3 as graphed on a number line and x<=3 on a coordinate plane. Explain how this same thinking applies to y<2x+1 ?? How do you know which side of the line should be shaded since the line is slanted? Be sure to explain the short-cut method as well as the algebraic method you could use to prove that the correct side of the line has been shaded.


 * Answer: **

To graph x>5 in a number line you have to put an open circle becuase it is not grater than or equal to. If i would graph in a coordinate plne, i would go to the x axis and draw an horizontal and dotted line because it is not equal to.

__**3.3**:__ __**(Looking at graph on page 113)**__ Write the inequality whose graph is shown. Explain every step of your thinking and how you came up with the inequality
The inequality is y = 10x+4. I came up with it when i look at the line and I go up four to the y axis and i went down 10 for the x axis.
 * Answer: **

__ **3.4:** __

Looking at the shaded graph in the document below, you need to identify a point that is a solution to the system and explain how you know it is a solution by looking at the graph. Also, identify a point that is a solution to only one of the inequalities, but NOT a solution to the system. Explain how you might test a point to determine whether it is a solution to the system or not?

[|3.4.doc]

**Answer:**