# 2 x 2 Matrix : Determinant and Inverse (WS, Notes, Pop Quiz w Answer Keys)

Subject
Resource Type
Product Rating
File Type

PDF

(1 MB|8 pages)
Product Description
• - Class Notes regarding 2 x 2 matrices and finding their determinants and inverses (Definitions of the Multiplicative Identity Matrix, Multiplicative Inverse of a Matrix, and the Determinant of a 2 x 2 Matrix.)
• - A worksheet of basic skill practice (With detailed answer key), including work on the following word problem: "A city has a stable group of 45,000 households.
Since last year, 84% of the households that used to use carrier A remained with carrier A, while 16% switched to carrier B. 93% of the households that used B stayed with B, while 7% of households using B switched to A. This year, 25,000 households now use long-distance carrier A, and 20,000 use long-distance carrier B..."
• - 2 similar Pop quizzes (With detailed answer keys) for students to be assessed as to how much they retained for this topic.

Note: For this topic, an introductory understanding of matrices and matrix multiplication are skills already implied.

I hope you will also consider my introduction to this topic of matrices, "Intro to Matrix Organization (Addition, Subtraction, Multiplication): https://www.teacherspayteachers.com/Product/Intro-to-Matrix-Organization-AdditionSubtraction-Multiplication-WS-Qz-Keys-4892683

Student tested, teacher approved!**

**I have been a teacher now for over a collective 20 years, 15+ of those teaching each mathematical level in Pennsylvania schools ranging from Pre-Algebra to Pre-Calculus. All of my submissions have been used for my classes for multiple years to great success.

Total Pages
8 pages
Included
Teaching Duration
2 days
Report this Resource to TpT
Reported resources will be reviewed by our team. Report this resource to let us know if this resource violates TpT’s content guidelines.

Teachers Pay Teachers is an online marketplace where teachers buy and sell original educational materials.