Tangent Line Calculator
ByKruskalCode Team•SaaS & Automation Studio
24:01
6 min read

The tangent line to a curve at a given point is the line that just touches the curve at that point and has the same slope as the curve.
Explanation
To find the equation of a tangent line, we need to know the slope of the line and a point on the line.
Formula
y - y1 = m(x - x1) m = (y2 - y1) / (x2 - x1)
Example
For example, if we have a curve y = x^2 and we want to find the tangent line at the point (1, 1), we can use the formula to find the slope of the line.
How to use the related calculator
To use this tool, simply enter the coordinates of two points on the curve, and the tool will calculate the equation of the tangent line.
Try the related calculator
Open toolFAQ
What is the tangent line to a curve?
The tangent line to a curve at a given point is the line that just touches the curve at that point and has the same slope as the curve.
How do I use this tool?
Enter the coordinates of two points on the curve, and the tool will calculate the equation of the tangent line.
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About the author
KruskalCode Team. KruskalCode builds scalable SaaS platforms, custom tools, mobile apps, and APIs for modern businesses.
Need a custom calculator, dashboard, or automation workflow? Reach out to KruskalCode.