Lesson 3-1 Practice

Front

What comes first in the order?

Back

Row

Front

What must be true in order to ADD two matrices?

Back

The dimensions must be equal.

Front

How many columns are in a 5 x 4 matrix?

Back

4

Front

How many rows are in a 7 x 3 matrix?

Back

7

Front

What are the dimensions of this matrix? (If it has 3 rows and 2 columns)

Back

3 x 2

Front

What is a matrix?

Back

A rectangular array of numbers arranged in rows and columns.

Front

What is the order of a matrix?

Back

The number of rows and columns it has, expressed as 'rows x columns'.

Front

Can you add a 2 x 3 matrix to a 3 x 2 matrix? Why or why not?

Back

No, because their dimensions are not equal.

Front

What is a square matrix?

Back

A matrix with the same number of rows and columns.

Front

What is the determinant of a matrix?

Back

A scalar value that is a function of the entries of a square matrix.