Linear Systems Matrix

Two or more equations with two or more of the same variables

• dependent system

• inconsistent system

• equal matrices

• system of equations

Find A-B

• -3     1
  7     -1

• 1     0
  1     -4

• -4       0
  6     -1

• not possible because rows do not match columns

Which of these matrices are in row echelon form?

• (a) only

• (b) only

• (a) and (d)

• (a) , (b), and (d)

• A
• B
• C
• D

What is the determinant of this matrix?

• 0

• 24

• -24

• -12

Solve the system of equations.
y = 4x+1
3x + 2y = 13

• (1, 5)

• (5, 1)

• (0.25, 2)

• ∅

Solve for x and y
y = 2x + 1
y = 4x - 1

• (1,3)

• (-1,-3)

• (-1,3)

• (3,1)

Solve the following system:
3x + 2y = 16
7x + y = 19

• (-2,5)

• (-2,-5)

• (2,-5)

• (2,5)

The augmented matrix shown in row-echelon form indicates a system with

• one solution

• no solution

• infinitely many solutions

• A
• B
• C
• D