Matrix

What is a Matrix?

• An equation of over 5 numbers or symbols 
• A set of numbers in rows and columns
• A method of finding the n^th value of a series
• A complicated number system

What is the name of each entry of a matrix?

• Row
• Element
• Dimension
• Rectangle

How many rows are in a 7 x 3 matrix?

• 7
• 3
• 21
• 10

How many columns are in a 5 x 4 matrix?

• 5
• 4
• 20
• 9

In Matrix R (pictured) what is the value of element R_3,2

• 8
• 9.01
• 6
• 1

What is the dimensions of this matrix?

• 2 x 3

• 3 x 2

• 6 x 1

• 1 x 6

Add

• 11    8
  -4     2
• 3     2
  -6    -6
• -3    2
  -4    -6
• 10    8
  -6    2

Subtract

• 3    -8
  0   -1
• 3   -4
  8  -13
• -3   8
  0    1
• 3   -8
  -8    1

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

• 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

Match each matrix to its correct dimension.

• 2 x 4

• 
• 1 x 3

• 
• 3 x 1

• 
• 4 x 2

• 
• 2 x 3

•