6.1Add/Subtract/Scalar Multiplication/Dimensions of Matrices

Front

What is a Matrix?

Back

A set of numbers arranged in rows and columns.

Front

State the dimensions of a 3 x 2 matrix.

Back

3 rows and 2 columns.

Front

How do you add two matrices?

Back

Add corresponding elements from each matrix.

Front

What is the result of adding the matrices: 11 8 -4 2 and 3 2 -6 -6?

Back

14 10 -10 -4.

Front

What are the dimensions of a 5 x 3 matrix?

Back

5 rows and 3 columns.

Front

How many rows are in a 7 x 3 matrix?

Back

7 rows.

Front

What is scalar multiplication in matrices?

Back

Multiplying each element of a matrix by a scalar (a constant number).

Front

If you multiply a 2 x 3 matrix by a scalar 4, what are the dimensions of the resulting matrix?

Back

The dimensions remain 2 x 3.

Front

What is the result of the scalar multiplication of the matrix 1 2 3 4 by 2?

Back

2 4 6 8.

Front

State the dimensions of a 3 x 1 matrix.

Back

3 rows and 1 column.