8th Grade · Expressions & Equations
Origin
8.EE.B.5
Definition
The point where the x-axis and y-axis intersect on a coordinate plane, with coordinates zero, zero. Proportional relationships always pass through the origin.
Examples
- Every proportional graph passes through (0,0).
- Buy 0 items, pay 0 dollars — that's the origin in context.
Key rule
Proportional relationships always pass through the origin; non-proportional ones don't.
Memory hook
Where the axes cross — (0,0).