X And Y Intercept Calculator
Calculate the x-intercept and y-intercept of a linear equation in slope-intercept form (y = mx + b) or standard form (Ax + By = C).
Published by:
isCalculator Editorial Team
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How to use this tool?
This calculator finds the X-intercept and Y-intercept of a linear equation. Follow these steps:
- Select the equation form from the dropdown: Slope-Intercept (y = mx + b) or Standard (Ax + By = C).
- Enter the required values:
- For Slope-Intercept: provide the slope (m) and y-intercept (b).
- For Standard: provide coefficients A, B, and C (A and B cannot both be zero).
- Click “Calculate Intercepts”. The X-intercept and Y-intercept will appear below, along with a step-by-step explanation.
- Interpret the results:
- X-intercept: the point where the line crosses the x-axis (y=0). If the line is horizontal (m=0) and not y=0, it shows “None”.
- Y-intercept: the point where the line crosses the y-axis (x=0).
Note: All inputs accept decimal numbers. Use negative values as needed. The calculator works with any real numbers—no specific units required.
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Frequently Asked Questions
The x-intercept is the point where the graph of the equation crosses the x-axis. It occurs when y = 0.
The y-intercept is the point where the graph crosses the y-axis. It occurs when x = 0.
If the slope is zero (horizontal line), the x-intercept does not exist unless the line is y=0, in which case every x is an intercept.
