1. Notes Over 4.3 Evaluate Determinants of 2 x 2 Matrices
Stands for the determinant of a matrix.
Multiply diagonally, down first.
Opposite products going up.

2. Notes Over 4.3 Evaluate Determinants of 3 x 3 Matrices
Repeat the first two columns.
Multiply diagonally, down first.
Opposite products going up.

3. Find the area of the triangle with the given vertices.
Notes Over 4.3
The Area of a Triangle
Find the area of the triangle with the given vertices.

4. Find the area of the triangle with the given vertices.
Notes Over 4.3
The Area of a Triangle
Find the area of the triangle with the given vertices.

5. Find the area of the triangle with the given vertices.
Notes Over 4.3
The Area of a Triangle
Find the area of the triangle with the given vertices.

6. Find the area of the triangle with the given vertices.
Notes Over 4.3
The Area of a Triangle
Find the area of the triangle with the given vertices.

7. Use Cramer’s Rule to solve the linear system.
Notes Over 4.3
Using Cramer’s Rule for a 2 x 2 System
Use Cramer’s Rule to solve the linear system.
Find the determinant of the coefficient Matrix
To find your x replace the x ’s in the coefficient Matrix with the constants
To find your y replace the y ’s in the coefficient Matrix with the constants

8. Use Cramer’s Rule to solve the linear system.
Notes Over 4.3
Using Cramer’s Rule for a 2 x 2 System
Use Cramer’s Rule to solve the linear system.
Find the determinant of the coefficient Matrix
To find your x replace the x ’s in the coefficient Matrix with the constants
To find your y replace the y ’s in the coefficient Matrix with the constants

9. Use Cramer’s Rule to solve the linear system.
Notes Over 4.3
Using Cramer’s Rule for a 2 x 2 System
Use Cramer’s Rule to solve the linear system.
Find the determinant of the coefficient Matrix
To find your x replace the x ’s in the coefficient Matrix with the constants
To find your y replace the y ’s in the coefficient Matrix with the constants

10. Use Cramer’s Rule to solve the linear system.
Notes Over 4.3
Using Cramer’s Rule for a 2 x 2 System
Use Cramer’s Rule to solve the linear system.
Find the determinant of the coefficient Matrix
To find your x replace the x ’s in the coefficient Matrix with the constants
To find your y replace the y ’s in the coefficient Matrix with the constants

11. Use Cramer’s Rule to solve the linear system.
Notes Over 4.3
Using Cramer’s Rule for a 2 x 2 System
Use Cramer’s Rule to solve the linear system.
Find the determinant of the coefficient Matrix
To find your x replace the x ’s in the coefficient Matrix with the constants
To find your y replace the y ’s in the coefficient Matrix with the constants

12. Use Cramer’s Rule to solve the linear system.
Notes Over 4.3
Using Cramer’s Rule for a 2 x 2 System
Use Cramer’s Rule to solve the linear system.
Find the determinant of the coefficient Matrix
To find your x replace the x ’s in the coefficient Matrix with the constants
To find your y replace the y ’s in the coefficient Matrix with the constants

13. Notes Over 4.3