Matrices Test Review

You can multiply a 2X3 matrix by which matrix?

• 2X2
• 2X12
• 3X12
• 2X3

Tags

CCSS.HSN.VM.C.8

Find: B*A (no calculator)

• 47 30

  9 5

• 17 15

  42 35

• 10 25

  7 1

• not possible because rows do not match columns

Tags

CCSS.HSN.VM.C.8

Subtract (no calculator)

• 3 -8

  0 -1

• 3 -4

  8 -13

• -3 8

  0 1

• 3 -8

  -8 1

Tags

CCSS.HSN.VM.C.8

Find A+B (no calculator)

• 8 10

  8 1

• 12 25

  7 1

• 10 30

  0 1

• can't add two together because the rows dont match columns

Tags

CCSS.HSN.VM.C.8

Multiply (no calculator)

• 20 15 -10

  30 -5 0

• -20 15 -10

  30 -5 0

• 1 8 3

  11 4 5

• 20 -15 10

  -30 5 0

Tags

CCSS.HSN.VM.C.7

Dimensions?

• a
• b
• c
• d

What must be true in order to ADD two matrices?

• They must be square.
• The dimensions must be equal.
• The determinant can't equal 0.
• The column of the 1st must equal the row of the 2nd.

Tags

CCSS.HSN.VM.C.8

What is the value of the determinant of the matrix?

• -26

• -14

• 26

• 14

Tags

CCSS.HSN.VM.C.12

Find the determinant of the matrix

• A
• B
• C
• D

Tags

CCSS.HSN.VM.C.12

Find the determinant of the matrix

• -7
• -17
• No Determinant
• 0