Multiplying matrices

What number is the scalar product of the matrix?

• 4

• -6

• -2

• -5

• undefined

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• Row 1 : 18, -12, -6
  Row 2 : -42, -48, 30
  Row 3 : -24, -36, 54
• Row 1 : 6, 18, 12
  Row 2 : 30, 42, 48
  Row 3 : 54, 36, 24
• Row 1 : 18, 12, 6
  Row 2 : 42, 48, 30
  Row 3 : 24, 36, 54
• Row 1 : -18, 12, 6
  Row 2 : 42, 48, -30
  Row 3 : 24, 36, -54

Calculate the scalar multiplication: 2 * [[-1, 3], [2, -4]] = ?

• [[3, -1], [-4, 2]]

• [[-2, 6], [4, -8]]

• [[-3, 1], [4, -2]]

• [[2, -6], [-4, 8]]

Bonus Point! 3A=?

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Find -3A

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• Does Not Exist

Perform the indicated matrix operation.

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• Not possible.

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If N = [[-3, 3], [-2, 2]] and t = -1, what is the result of tN?

• [[3, -3], [2, -2]]

• [[-3, 3], [-2, 2]]

• [[1, -1], [1, -1]]

• [[0, 0], [0, 0]]

What is the result of scalar multiplication of the matrix [[-2, 1], [3, -4]] by the scalar -3?

• [[6, -3], [-9, 12]]

• [[1, -1], [-1, 1]]

• [[0, 0], [0, 0]]

• [[-5, 2], [7, -9]]