matrices

Presentation

•

Mathematics

•

9th - 12th Grade

•

Practice Problem

•

Easy

•

CCSS

6.NS.B.3, HSN.VM.C.8, HSN.VM.C.7

Standards-aligned

Adedamola Joseph

Used 5+ times

FREE Resource

9 Slides • 9 Questions

Matrices

by Matthew Lopez

Matrices

Welcome to the Matrix

What is a matrix?

A matrix is a rectangular form of data.

Matrices

Are used by Netflix and Hulu to recommend videos for you
Help solve higher Algebra problems such as Quadratics.
Are used in computer graphics and video games.

Matrices

Can have either brackets of parenthesis.

A Matrix is comprised of....

Rows
Columns
Elements

Size of a Matrix

The size is determined by the number of rows x number of columns. Only like size matrices can be added or subtracted from one another.

Multiple Choice

What is the size of the matrix below? Always do Rows x Columns.

3 x 4

4 x 3

Multiple Choice

What is the size of the matrix below?

0 x 1

1 x 0

3 x 3

3 x 0

Identifying Elements in a Matrix

We use subscript to identify the location of an element in a matrix. It is the name of the matrix followed by row x column. Rows are top to bottom and columns are left to right.

Determinants

Multiple Choice

Subtract

3 -8
0 -1

3 -4
8 -13

-3 8
0 1

3 -8
-8 1

Multiple Choice

Find A-B

-3 1
7 -1

1 0
1 -4

-4 0
6 -1

not possible because rows do not match columns

Multiple Choice

Add

11 8
-4 2

3 2
-6 -6

-3 2
-4 -6

10 8
-6 2

Multiple Choice

Add

11 8
-4 2

3 2
-6 -6

-3 2
-4 -6

10 8
-6 2

Multiple Choice

Multiply

20 15 -10
30 -5 0

-20 15 -10
30 -5 0

1 8 3
11 4 5

20 -15 10
-30 5 0

Multiple Choice

Which element is located in A₂₃?

-3

-9

Multiple Choice

What is the location of 5?

A₁₂

A₂₁

A₂₅

A₁₃

Matrices

by Matthew Lopez

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