Math with Bad DrawingsCartoon Archive

Prove x < y

2024

Two variables take a textbook inequality personally: x is offended, y is smug about being provably greater.

Use this cartoon

Free for classrooms, worksheets, slides and other non-commercial use under CC BY-NC 4.0, with credit to Ben Orlin.

Cartoon by Ben Orlin, Math with Bad Drawings. https://cartoons.mathwithbaddrawings.com/2024-01-01-prove-x-y/ (CC BY-NC 4.0)
Transcript

[Problem] "7. Suppose y > 5 and 0 < xy − 3y + 3x − x². Prove x < y."

Teacher: "I mean… I wasn't trying to imply any kind of inequality between you…" x: "Then what's the meaning of this inequality?" y: "I always knew I was greater, but I didn't realize it's provable."

Topics
Algebra › InequalitiesAlgebra › FactoringLogic & Proof › Proofs & TheoremsAlgebra › Variables
Level
High SchoolCollege
Themes
Teachers & ClassroomPunsPuzzles & Problems