Determinants and Cramer's Rule

Solve this system of equations using a matrix equation and inverses.

• x = -5, y = -1

• x = 2, y = -1/4

• x = 1/2, y = -3/4

• x = -1, y = -5

Calculate the determinant

• 0

• none

• -32

• -8

Calculate the determinant

• 0

• none

• -32

• -8

Solve for x and y using Cramer's Rule
3x + 2y = 16
7x + y = 19

• (-2,5)

• (-2,-5)

• (2,-5)

• (2,5)

Calculate the determinant

• 0

• -15

• -70

• 10

Calculate the determinant for the above matrix.

• 16

• -16

• -6

• 6

Find the inverse of the matrix.

• 
• 
• 
• 

Find the determinant of the matrix

• -28

• -20

• 20

• 0

• A
• B