5th Grade · Geometry
Y-axis
5.G.A.1
Definition
The vertical number line on the coordinate plane.
Examples
- The y-axis goes up and down through the origin.
- Moving 3 units up from the origin along the y-axis lands at (0, 3).
Key rule
The y-value in an ordered pair tells how far to move along the y-axis.
Memory hook
Y is up and down — it climbs.