Slope Calculator
Enter two points below to instantly find the slope of the line through them.
Slope (m)
2
Line equation: y = 2x − 1
The Slope Formula
m = (y₂ − y₁) / (x₂ − x₁)
Worked example
Points (2, 3) and (6, 11).
m = (11 − 3) / (6 − 2) = 8 / 4 = 2
Slope = 2, so the line is y = 2x − 1
Frequently Asked Questions
What is the slope formula?
Slope (m) equals rise over run: m = (y₂ − y₁) / (x₂ − x₁), using any two points on the line.
What does a negative slope mean?
A negative slope means the line falls as it moves left to right. A positive slope rises, a slope of zero is flat, and a vertical line has an undefined slope.
Can you find slope from just one point?
No — slope describes the rate of change between two points, so you need at least two points (or one point plus the slope itself) to define a line.
Related Calculators
- Quadratic Formula Calculator — Algebra
- Log Calculator — Algebra
- Exponent Calculator — Algebra
- Factoring Calculator — Algebra