7th Grade · Ratios & Proportional Relationships
Proportional Relationship
7.RP.A.2
Definition
A relationship between two quantities with a constant ratio, written y = kx.
Teach it
Where it is taught, with guided notes, practice, homework, an exit ticket and an interactive Teacher Deck.
Examples
- y = 3x forms a straight line through (0,0)
- Doubling x doubles y
Key rule
Its graph is a straight line through the origin.
Memory hook
Straight line, through the origin, constant ratio.