How to use it
- Choose two points.
- Compute Δy and Δx in matching order.
- Divide Δy/Δx.
See it in action
From (2,3) to (6,11), slope=(11−3)/(6−2)=8/4=2.
How to verify it
Moving 1 right should move 2 up on the same line.
Think of Slope as Rate of Change
Slope is vertical change divided by horizontal change and carries units.