Matrix Represents

State True or false : Matrix addition is associative as well as commutative.

• True

• False

Identify The matrix

• Identity

• Scalar

• Diagonal Matrix

• Row Matrix

If A and B are two matrices of the order 3 × m and 3 × n, respectively, and m = n, then the order of matrix    (5A – 2B) is

• m × 3

• 3 × 3

• m × n

• 3 × n

The sum of values on the main diagonal of A is equal to

• 6

• 7

• 16

• 3

The value of y for which matrix A is a diagonal matrix.

• Only 0

• Any real Value

• Not possible to find

• 1

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Which matrix equation represents the system shown?

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Given matrices A and B what is 3A - 4B?

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Given matrices A and B what is 4B + 3A?

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Consider the matrices P and S. P represents airplane routes and S represent subway lines between 4 cities. Which expression gives the number of routes from City 2 to City 4 if you take an airplane first and then a subway?

• (1)(1) + (0)(0) + (0)(2) + (2)(0)

• (1)(1) + (1)(2) + (1)(1) + (0)(0)

• (1)(0) + (0)(0) + (1)(1) + (0)(1)

• (2)(2) + (1)(1) + (1)(1) + (0)(0)