1. Warm Up: Graph y = - 2x + 7 and find the x-intercept and y-intercept.
*Extra: Write the equation in slope point form.

2. Systems of Linear Inequalities
Unit #4
Systems of Linear Inequalities
System of Equations: Any number of equations involving the
same variables
To solve a system of equations means...
 1. to find the point of intersection of two or more graphs
 2. to find the values of the variables which satisfy all 
  given equations
We have actually studied systems of equations in the Grade 9 
and Grade 10.

3. Ex: Does the point (4, 3) satisfy the following system of 
equations?

4. Example: Does the point (-1, 5) satisfy the following system?

5. Step 2: Identify the point of intersection.
Ex: Solve this system graphically. Verify your solution.
Step 1: Graph both lines.
Step 2: Identify the point of intersection.
Step 3: Verify your solution in the equations.

6. Ex: Solve this system graphically. Verify your solution.

7. Ex: Solve this system graphically. Verify your solution.

8. Solve the following system of equations graphically.
2x - 3y = 6
-3x + 4y = 12

9. Independent Practice:
Solving Systems Graphically Worksheet

10. Exit Slip: Solve the following systems graphically:
x + y = 3
3x + 4y + 1 = 0