Matrix Operations
What is 2x2
What is a Linear System with 3 variables?
Properties
100

[2 3 5] + [3 5 8] = ?

What is [5  8  13]

100

A variable needs to be eliminated to solve the system of equations below. Choose the correct first step. 

{(-5x,+5y,=,30),(5x,+6y,=,-19):}

A. Subtract to eliminate x

B. Add to eliminate x

C. Subtract to eliminate y

D. Add to eliminate y

what is 

B. Add to eliminate x

100

A system of linear equations with 3 variables will have this many solutions to find. 


what is 3


100

This refers to the number of rows and columns in a matrix

What is the order of a matrix?

200

Do the following, and determine the element a22 of result:

What is a22 = 10?

|-25  -30  20|
|-20   10   5 |  

200

Find the solution of the systems of equations using the elimination method

{(9x,+2y,=,-38),(9x,+10y,=,26):}

what is 

(-6,8)

200

Not to be confused with 4-sided polygons, the shape of a matrix is generally ______________

What is rectangular?

300

[5  4] - [2  -3] = ?

What is [3  7]

300

Find the solution of the systems of equations using the elimination method

{(-2x,+y,=,0),(10x,+7y,=,48):}

what is 

(2,4)

300

Solve the following system of equations for all three variables

{(x,+3y,+9z,=,4),(-x,+8y,-6z,=,4),(x,+3y,+3z,=,10):}

what is 

x=10, y=1, z=-1

300

A matrix with m rows and n columns

What is a m x n matrix?

400

When multiplying the following matrices(A & B),  what is the output at c21?

What is c21 = -8 + 10 = 2

400

Find the solution of the systems of equations using the elimination method

{(-x,-2y,=,4),(2x,+8y,=,-28):}

what is 

(6,-5)

400

Solve the following system of equations for all three variables

{(-9x,+6y,+4z,=,-10),(-9x,+5y,+4z,=,-8),(9x,+y,-3z,=,1):}

what is 

x=2, y=-2, z=5

400

This matrix has the same number of rows as columns

What is the square matrix?

500

Mechanical pencils cost $4.95, pens cost $2.99, and notebooks cost $3.49.  Olivier bought 12 mechanical pencils, 8 pens, and 7 notebooks. Paulina bought 6 mechanical pencils, 12 pens, and 9 notebooks. Use matrices to find the total amount Olivier spent.


500

Find the solution of the systems of equations using the elimination method

{(-x,-8y,=,49),(-x,-2y,=,7):}

what is 

(7,-7)

500

Solve the following system of equations for all three variables

{(-8x,+7y,-8z,=,-9),(-8x,+7y,-10z,=,-7),(x,-2y,+z,=,9):}

what is 

x=-4, y=-7, z=-1

500

Row by column is how we go... the process for which operation... do you know?

What is matrix multiplication?

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