# Tangent Line Calculator

## Now, What Exactly Is A “Tangent Line Calculator”?

A tangent line calculator is a tool that helps you find the equation of a tangent line to a curve at a given point.

## Free Tangent Line Calculator With Steps

This is a very simple tool for Tangent Line Calculator. Follow the given process to use this tool.

☛ Step 1: Enter the complete equation/value in the input box i.e. across “Provide Required Input Value:”

☛ Step 2: Click “Enter Solve Button for Final Output”.

☛ Step 3: After that a window will appear with final output.

Hope you found this Free Tangent Line Calculator useful. Do visit usefulknot.com for more.

## Formula for tangent line

The tangent line to a curve at a given point can be calculated using the following formula:

y = mx + b

Where y is the y-coordinate of the point on the curve, m is the slope of the tangent line, and b is the y-intercept of the tangent line.

## Tangent Line Definition

A tangent line is a line that intersects a curve at a single point.

## Example of tangent line based on Formula

The equation of a tangent line to a curve at a point P is given by the formula:

y – y1 = m(x – x1)

where m is the slope of the tangent line and (x1, y1) is the coordinates of the point P.

For example, if the point P has coordinates (1, 2) and the slope of the tangent line is m = 3, then the equation of the tangent line is given by y – 2 = 3(x – 1), or y = 3x + 1.