Matrices Definition and Description

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 (this is row 3 and column 2)

• 8
• 9.01
• 6
• 1

• x = 5

  y = 3

• x = 6

  y = 2

• x = 2

  y = 6

• x = 3

  y = 5

What are the dimensions of this matrix?

• 2 x 3
• 3 x 2
• 6 x 1
• 1 x 6

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

Find the value of x, y and z.

• x = 9, y = -1, z = 4

• x = 3, y = -1, z = 7

• x = 3, y = -1, z = 1

• x = 2, y = -1, z = 7

How many elements are there in a matrix of order 9×7?

(write the figure only)

Complete the following: If a matrix has 4 elements and the number of rows and the number of columns of this matrix are equal, then the order of the matrix is _____.

• 4 X 1

• 2 X 3

• 2 X 2

• 4 X 4