Matrices - Key Ideas 1

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 are the order of this matrix?

• 2 x 3
• 3 x 2
• 6 x 1
• 1 x 6

What comes first in the order?

• Row
• Column

Tags

CCSS.4.NBT.B.5

What must be true in order to ADD two matrices?

• They must be square.
• The dimensions must be equal.
• The determinant can't equal 0.
• The column of the 1st must equal the row of the 2nd.

Tags

CCSS.HSN.VM.C.8

How do you name the circled element?

• a_3,3

• a_4,3

• a_3,4

• a_4,4

You can multiply a 2X3 matrix by which matrix?

• 2X2
• 2X12
• 3X12
• 2X3

Tags

CCSS.HSN.VM.C.8

What do m, n, p and q equal in this scalar matrix multiplication?

• m=8, n=9, p=-4, q=4 
• m=15, n = -45, p=20, q=-5
• m=20, n=-5, p=15, q=-45
• m=-5, n=20, p=-45, q=15

Tags

CCSS.HSN.VM.C.7

How many columns are in a 5 x 4 matrix?

• 5
• 4
• 20
• 9

In Matrix R (pictured) what element is a₂₃?

• 8
• 9.01
• 6
• 1

Complete this scalar multiplication.

• 
• 
• 
• 

Tags

CCSS.HSN.VM.C.7