What you’ll learn
Calculate slope.
Key idea
Finite slope is vertical change divided by horizontal change, including its sign.
Subtract in matching point order and divide rise by run; signs encode direction.
Worked example
Enter the exact value or ordered values in the format requested below.
A line passes through A=(-3, -2), B=(-1, 3). Compute its exact slope as rise over run.
- Rise=3-(-2)=5; run=-1-(-3)=2.
- Slope=5/2=5/2.
Answer: 5/2
Quick Check
Evaluate a worked attempt at calculate slope, identify the first invalid step, and provide the correction.
For line points A=(-3, 0), B=(-2, -5), Step 1 gets rise=-5, run=1. Step 2 computes slope=run/rise=-1/5. Locate the first invalid step and correct slope.