
Understanding the Identity Matrix

Interactive Video
•
Mathematics
•
9th - 12th Grade
•
Hard
Standards-aligned

Emma Peterson
FREE Resource
Standards-aligned
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main characteristic of an identity matrix?
All elements are ones.
Main diagonal elements are zeros, others are ones.
All elements are zeros.
Main diagonal elements are ones, others are zeros.
Tags
CCSS.HSN.VM.C.10
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is an identity matrix typically denoted?
With a capital 'I'.
With a lowercase 'i'.
With a capital 'M'.
With a lowercase 'm'.
Tags
CCSS.HSN.VM.C.10
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens when you multiply a matrix by the identity matrix?
The matrix doubles.
The matrix is inverted.
The matrix becomes zero.
The matrix remains unchanged.
Tags
CCSS.HSN.VM.C.10
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If A is an n x n matrix, what is the result of A multiplied by the identity matrix?
A transposed matrix.
A zero matrix.
A matrix with doubled values.
The original matrix A.
Tags
CCSS.HSN.VM.C.10
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the example of multiplying a 2x2 matrix with the identity matrix, what is the result?
The original 2x2 matrix.
A matrix with all ones.
A new matrix with different values.
A zero matrix.
Tags
CCSS.HSN.VM.C.10
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What property of multiplication is demonstrated when a matrix is multiplied by the identity matrix?
Associative property.
Distributive property.
Inverse property.
Commutative property.
Tags
CCSS.HSN.VM.C.10
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the result of multiplying matrix B by the identity matrix using a calculator?
Matrix B is transposed.
A zero matrix.
Matrix B remains unchanged.
Matrix B is inverted.
Tags
CCSS.HSN.VM.C.10
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