
Matrix Solutions and Row Operations

Interactive Video
•
Mathematics
•
9th - 10th Grade
•
Hard

Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What role does the variable k play in the system of equations discussed in the video?
It is a constant that does not affect the solution.
It determines the coefficients of the equations.
It represents the number of solutions.
It decides the type of solution the system will have.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in solving the system of equations using matrices?
Eliminating one of the variables.
Solving for x, y, and z directly.
Setting up the augmented matrix.
Finding the determinant of the matrix.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which operation is performed to make the entries below the pivot zero?
Adding a multiple of one row to another.
Multiplying a row by a constant.
Dividing a row by a constant.
Swapping two rows.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What expression is derived for k during the row operations?
k^2 + 4
k - 4
k^2 - 13
k + 5
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What condition must be met for the system to have a unique solution?
k = 2
k^2 = 4
k = 0
k^2 ≠ 4
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the matrix look like when there is no solution?
0 0 0 | 0
0 0 0 | 5
0 0 0 | 2
0 0 0 | 7
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
For infinitely many solutions, what should the last row of the matrix look like?
0 0 0 | 5
0 0 0 | 2
0 0 0 | 0
0 0 0 | 7
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