Introduction to Matrices

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

What is the value of element a₂₃?

• 2
• -1
• 6
• 1

Tags

CCSS.HSA.REI.C.8

How many columns are in a 5 x 4 matrix?

• 5
• 4
• 20
• 9

What is the value of element a₄₂?

• 2
• -1
• 6
• 1

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

• 8
• 9.01
• 6
• 1

What are the dimensions of this matrix?

• 2 x 3
• 3 x 2
• 6 x 1
• 1 x 6

What is the value of element a₂₅?

• 2
• -1
• 6
• undefined

How many rows are in a 7 x 3 matrix?

• 7
• 3
• 21
• 10

Dimensions?

• a
• b
• c
• d