## 1. If The Graph of each equation in a system of two variables in a line then the system is a linear system.

### 1.1. Steps to solving:

### 1.2. Absolute Value

### 1.3. 1.Find the vertex using -b over m,c

### 1.4. 2.Then make two problems, one negative, one postive

### 1.5. Solve them and graph

## 2. Linear systems

### 2.1. Solution of linear systems

### 2.2. 1. Graph lines

### 2.3. 2.Find where they meet.

### 2.4. 3.write the point where it intersects

## 3. System of Inequalities.

### 3.1. Two inequalities using two Variables and you use shading to locate the solution.

3.1.1. Solving

3.1.2. Rearrange inequality into slope-intercept form

3.1.3. Graph both lines

3.1.4. Then use a dotted line for greater then or less then or a solid line for greater then or equil to or less then or equil to

3.1.5. Shade as needed

3.1.5.1. Solution:

3.1.5.2. The solution is where the shading overlaps