Linear Equation Formula:
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The slope and y-intercept calculation determines the parameters of a linear equation from two given points. The slope (m) represents the rate of change, while the y-intercept (b) indicates where the line crosses the y-axis.
The calculator uses the formulas:
Where:
Explanation: The slope is calculated as the ratio of the vertical change to the horizontal change between two points. The y-intercept is derived by substituting one point and the calculated slope into the linear equation.
Details: These parameters are fundamental in linear equations and are used extensively in mathematics, physics, engineering, economics, and data analysis to model relationships between variables.
Tips: Enter the coordinates of two distinct points. Ensure x₂ ≠ x₁ to avoid division by zero. The calculator will compute both slope and y-intercept.
Q1: What if the two points have the same x-coordinate?
A: The slope would be undefined (vertical line), and the calculator will show an error message.
Q2: Can I use this for non-linear equations?
A: No, this calculator is specifically designed for linear equations between two points.
Q3: What does a slope of zero mean?
A: A slope of zero indicates a horizontal line, meaning y-values remain constant regardless of x.
Q4: How accurate are the results?
A: Results are calculated with high precision (4 decimal places) based on your input values.
Q5: Can I use negative values?
A: Yes, the calculator accepts both positive and negative coordinate values.