Matrices Solving Equations

Solve using inverse equations.

• A

• B

• C

• D

Tags

CCSS.HSA.REI.C.9

Solve the system by inverting the coefficient matrix and using (A^-1)(x)=b. Enter your answer as (x1, x2) format.

Tags

CCSS.HSA.REI.C.9

Solve the system by inverting the coefficient matrix and using (A^-1)(x)=b. Type your answer in (x1, x2, x3) format.

Tags

CCSS.HSA.REI.C.9

Solve the linear systems together by using the values of b for two separate systems, then reducing an appropriate augmented matrix to reduced row echelon form. Write your answer as (x1, x2), (x1, x2) form.

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve the linear systems together by using the values of b for two separate systems, then reducing an appropriate augmented matrix to reduced row echelon form. Write your answer as i(b1, b2), ii(b1, b2), iii(b1, b2), iv(b1, b2) form.

Tags

CCSS.8.EE.C.8B

Is the following matrix elementary?

• yes, it's elementary

• no, it's not elementary

• can't be determined

For the following elementary matrix, describe the elementary row operation.

• The second and first row were switched

• The first row was multiplied by 1/2 and added to the second

• The second row as multiplied by 1/2

• The last row was multiplied by 1/2 and added to the second

Tags

CCSS.HSA.REI.C.9

Are the following matrices inverses of each other?

• yes

• no

• can't tell

Tags

CCSS.HSA.REI.C.9

Solve by matrices.

4x+9y=28

-4x-y=-28

• (-7,0)

• (6,0)

• (-6,0)

• (7,0)

Tags

CCSS.HSA.REI.C.9

Solve by matrices.

7x+y=-9

-3x-y=5

• No solution

• (1,8)

• (-2,-3)

• (-1,-2)

Tags

CCSS.HSA.REI.C.9