Slope Calculator
Rise over run, every time.
Slope Calculator
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What This Calculator Does
The Slope Calculator finds the slope and equation of a line passing through two points. Slope measures the steepness and direction of a line.
How It Works
Slope = (y2 - y1) / (x2 - x1). The equation is y = mx + b where m is the slope and b is the y-intercept.
Example
Points (2,3) and (6,11): slope = (11-3)/(6-2) = 8/4 = 2. Equation: y = 2x - 1.
Formula
m = (y2-y1)/(x2-x1)Reading the Results
Slope (m)
The steepness of the line. Positive = rising, negative = falling, zero = horizontal, undefined = vertical.
y-intercept (b)
Where the line crosses the y-axis.
Frequently Asked Questions
What does a slope of zero mean?
A slope of zero means a horizontal line. The y-value is constant.
What does undefined slope mean?
Undefined slope occurs with a vertical line where x2 equals x1, causing division by zero.
How do I find slope from an equation?
From y = mx + b, the slope is m. For ax + by + c = 0, slope = -a/b.