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Y-Intercept

Tool for calculating the y-intercept of a line from 2 points or from 1 point and the slope coefficient. Calculation of the intercept of the line with the y-axis.

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Y-Intercept -

Tag(s) : Geometry, Functions

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Y-Intercept

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Y-Intercept Calculator

From function expression


From 2 points (only linear/affine)





See also: Linear Equation

From Slope coefficient and 1 point




X-Intercept Calculator

⮞ Go to: X-Intercept

Slope coefficient calculator

Tool for calculating the y-intercept of a line from 2 points or from 1 point and the slope coefficient. Calculation of the intercept of the line with the y-axis.

Answers to Questions

What is the y-intercept? (Definition)

The y-intercept is the intersection point of the function/line with the y (ordinate) axis for the abscissa value x = 0 (origin).

How to calculate the y intercept?

From the equation

For any function (not necessarily affine/linear), calculate the value for $ x = 0 $. The value obtained is the y-intercept.

Example: A curve of equation $ 3x ^ 2 + 1 $, with $ x = 0 $ is $ 3 \times 0^2 + 1 = 1 $, so 1 is the y-intercept

For an equation of a line of the plane, the equation has the form $ a x + b $ with $ b $ the y-intercept.

Example: A line of equation 3x+4 has 4 as y-intercept

From 2 points (line only)

With 2 points, can be calculated the equation of the line (see the linear equation calculator) and thus to deduce the y-intercept (see above)

From the slope coefficient and 1 point (line only)

Knowing the slope coefficient of a line and a point, can be deduced the equation of the line (see the linear equation calculation) and thus deduce the y-intercept (see above).

Source code

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