What is the primary tool used in this video to solve the system of equations?

Matrix Equations and Their Solutions

Interactive Video
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Mathematics
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9th - 12th Grade
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Easy

Olivia Brooks
Used 1+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Spreadsheet software
Scientific calculator
Desmos matrix calculator
Graphing calculator
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the matrix equation, what does the first row of the coefficient matrix represent?
The constants from the equations
The coefficients of x and y from the first equation
The variables x and y
The solution to the system
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of finding the inverse of the coefficient matrix?
To check if the system has no solution
To determine the determinant of the matrix
To simplify the constant matrix
To solve for the variable matrix
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the result of multiplying a matrix by its inverse?
Variable matrix
Identity matrix
Zero matrix
Constant matrix
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which button on the Desmos calculator converts decimal approximations to fractions?
Clear all
New matrix
Convert to fraction
Identity matrix
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the elements of the solution matrix x in fraction form?
17/11 and 13/22
7 and 5
3 and 4
4 and -2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does it mean if a system of equations is consistent and independent?
It has a dependent solution
It has exactly one solution
It has infinitely many solutions
It has no solution
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