Matrix Vocabulary
A matrix is made up of these individual numbers.
What are elements?
How many rows are in this matrix?
[ 2 3
5 -1
0 7 ]
What is 3?
What is the element in Row 1, Column 2?
[ 7 -1 4
2 5 9
0 3 -6 ]
What is -1?
Write the augmented matrix:
x + y = 6
2x - y = 3
What is
[ 1 1 | 6
2 -1 | 3 ]
[ 1 0
0 1 ]
This special matrix is called the?
What is the identity matrix?
The arrangement of numbers in rows and columns is called this.
What is a matrix?
What are the dimensions?
[ 1 4 2 ]
What is 1 x 3?
What is the element in Row 3, Column 1?
[ 7 -1 4
2 5 9
0 3 -6 ]
What is 0?
Write the missing coefficient: y = 4
What is 0 for the x-coefficient?
True or False: Can you interchange any two rows to do row operations?
What is True?
Matrices are usually named using this type of letter.
What is a capital letter?
What are the dimensions?
[ 6
-2
5 ]
What is 3 × 1?
What is the element in Row 2, Column 3?
[ 7 -1 4
2 5 9
0 3 -6 ]
What is 9?
Write the augmented matrix:
-3x + 2y = 10
4x + y = -2
[ -3 2 | 10
4 1 | -2 ]
What does the identity matrix look like?
What is
[ 1 0
0 1 ] ?
The notation “m × n” refers to this.
What are the dimensions of the matrix?
How many columns are in this matrix?
[ 3 8 2 1
-4 0 9 5 ]
What is 4?
What is the element in Row 1, Column 3?
[ 7 -1 4
2 5 9
0 3 -6 ]
What is 4?
Identify this matrix as coefficient matrix, augmented matrix, or identity matrix:
[ 2 -1 | 8 ]
What is an augmented matrix?
What is the goal of row reduction?
What is to get the identity matrix?
The set of numbers on the left side of the augmented matrix (before the bar).
What are the coefficients?
Give the dimensions of the matrix:
[ 1 0 3
5 1 -1
-2 4 7
0 0 6 ]
What is 4 × 3?
What is the element in Row 3, Column 3?
[ 7 -1 4
2 5 9
0 3 -6 ]
What is -6?
What system matches this matrix?
[ 1 -2 | 5
0 1 | -3 ]
What is x - 2y = 5 and y = -3?
If the final matrix is
[ 1 0 | -4
0 1 | 7 ]
what is the solution?
What is (−4,7)?