6th Grade · The Number System
X-coordinate
6.NS.C.6c
Definition
The first number in an ordered pair, showing horizontal distance from the origin.
Examples
- In (3, 2), the x-coordinate is 3 — move right 3.
- The x-coordinate tells how far to move left or right.
Key rule
The x-coordinate is always listed first in an ordered pair.
Memory hook
First number, left-right movement.