8th Grade · Expressions & Equations
Unit Rate
8.EE.B.5
Definition
A rate that compares a quantity to one unit of another, found by making the denominator equal to one. It equals the slope of a proportional graph.
Examples
- 12 dollars for 4 pounds = 3 dollars per pound.
- 180 miles in 3 hours = 60 miles per hour.
Key rule
On a proportional graph, the unit rate is the slope.
Memory hook
The amount for exactly one unit.