Test on Matrices

The order of Matrix A is

• 2

• 3

• 6

• 2x3

• 3x2

The semester 1 results in English, Maths and Sport for three students are shown in matrix form. Ben’s result for Maths was:

• 72

• 76

• 79

• 87

• 90

The matrix A - B is

• 
• 
• 
• 

Matrix multiplication is not defined for:

• SU

• US

• RU

• UR

• TR

The order of the product TU is:

• 1x2

• 2x2

• 2x1

• 3x2

• 3x1

The inverse of Matrix B is:

• 
• 
• 
• 

The first step in the matrix method for solving the above simultaneous equations is

• 
• 
• 
• 

The order of matrix B is

• 4

• 3

• 12

• 3x4

• 4x3

Car sales during a 3-month period for three different models A, B and C were recorded in matrix form. The number of model C sold in June was:

• 1

• 4

• 5

• 7

• 9

The matrix multiplication QP gives the matrix

• 
• 
• 
•