Basic Matrix Operations

How many columns are in a 5 x 4 matrix?

• 5

• 4

• 20

• 9

What are the dimensions of this matrix?

• 2 x 3

• 3 x 2

• 6 x 1

• 1 x 6

In Matrix R (pictured) what element is r₂₃?

• 8

• 9.01

• 6

• 1

Add

• 11    8
  -4     2

• 3     2
  -6    -6

• -3    2
  -4    -6

• 10    8
  -6    2

Tags

CCSS.HSN.VM.C.8

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Tags

CCSS.HSN.VM.C.8

What do w, x, y and z equal in this matrix equation?

• w = 13, x = 4, y = 7, z = 23

• w = 13, x = -4, y = 11, z = 23

• w = 13, x = 4, y = 11, z = 23

• w = 13, x = 4, y = 11, z = 17

Find 2A-3B

• -3 1

  7 -1

• 1 0

  1 -4

• -4 0

  6 -1

• -14 -5

  11 -3

Can the operation be performed?

• Yes

• No

• Sometimes

• only Mrs. Jordan knows

Tags

CCSS.HSN.VM.C.8

Find 3B - 2A

• [22 25]

  [17 3]

• [14 5]

  [-11 3]

• [-14 5]

  [11 -3]

• none of these

Find 2B-5A

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