PreCal - Vectors & Matrices Test Review

Let A = [ -5 2 ] and B = [ 1 0 ].

Find 2A + 3B

• [ -2 2 ]

• [ -9 4 ]

• [ -10 4 ]

• [ -7 4 ]

Determine the value of each variable.

 

• x = 2

  y = 3

  k = 9

• x = 2

  y = 9

  k = 5

• x = 5

  y = 7

  k = 9

• x = -2

  y = -3

  k = -9

Given a = 〈7, 6〉and b = 〈1, 5〉,

Find a ・ b

Find the indicated matrix, or state that the product is undefined.

AB

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• 
• 
• 

Tags

CCSS.HSN.VM.C.8

Perform the indicated operation, if possible.

• 
• 
• 
• 

Tags

CCSS.HSN.VM.C.8

Find the matrix product, if possible.

• 
• Not possible

• 
• 

Tags

CCSS.HSN.VM.C.8

Let u = 〈-6, -3〉, v = 〈2, 9〉

Find u + v

• 〈3, -1〉

• 〈-8, -12〉

• 〈-9, 11〉

• 〈-4, 6〉

Tags

CCSS.HSN-VM.B.4A

CCSS.HSN-VM.B.4B

• 〈8, 9〉

  √145

• 〈8, 9〉

  145

• 〈-8, -9〉

  145

• 〈-8, -9〉

  √145

Tags

CCSS.HSN.VM.A.2

Find the inverse of A if it has one, or state that the inverse does not exist.

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• 
• Inverse does not exist

• 

Tags

CCSS.HSA.REI.C.9