The equation_straight_line function allows to calculate the equation of a straight line from the coordinates of two points with step by step calculation.

Equation_straight_line online

In the plan, there is one and only one straight line through two points. In a system (O,`vec(i)`,`vec(j)`) of the plan, it is possible
from the coordinates of two points to find the equation of a line
from the **coordinates of two points to find the equation of a line**.

The equation_straight_line function is able to **find the equation of a straight line** from the coordinates of two points.

The function is able to determine the equation of a straight line through two points with different abscissa, but also the equation of a straight line through two points with the same abscissa.

For example, to **calculate the equation of the straight line** through the points A[3;0] and B[2;5]
enter equation_straight_line([3;0];[2;5]),
after calculation the result `[y=15-5*x]` is returned.

For example, to **calculate the equation of the straight line** through the points A[3;2] et B[3;3]
enter equation_straight_line([3;2];[3;4]),
after calculation the result `[x=3]` is returned.

In some cases the calculator after determining the **equation of the straight** line from two points will propose to **draw straight line**
associated with this equation.
For that, when it is possible, it is enough to click on the link which appears in the area of detail calculations.

The equation_straight_line function allows to calculate the equation of a straight line from the coordinates of two points with step by step calculation.

See also :

- Arithmetic solver : arithmetic_solver. This solver allows finding a target number from a set of integer in using arithmetic operations.
- Solving quadratic equation with complex number : complexe_solve. The complex number equation calculator returns the complex values for which the quadratic equation is zero.
- Calculation of the discriminant online : discriminant. Calculator that allows the calculation of the discriminant of a quadratic equation online.
- Equation solver : equation_solver. The equation solver allows to solve equations with an unknown with calculation steps : linear equation, quadratic equation, logarithmic equation, differential equation.
- Find equation of a straight line from two points : equation_straight_line. The equation_straight_line function allows to calculate the equation of a straight line from the coordinates of two points with step by step calculation.
- Find the equation of tangent line : equation_tangent_line. The tangent line equation calculator is used to calculate the equation of tangent line to a curve at a given abscissa point with stages calculation.
- Inequality calculator : inequality_solver. Inequality solver that solves an inequality with the details of the calculation: linear inequality, quadratic inequality.
- Pythagorean theorem : pythagorean. The function makes it possible to verify by using the Pythagorean theorem knowing the lengths of the sides of a triangle that this is a right triangle. If the sides of the triangle depend on a variable, then the value of the variable is calculated so that the triangle is a right triangle.
- Solve system of linear equations : solve_system. The solve_system function allows to solve equations with several unknowns: Equation 2 unknown systems, systems of equations with 3 unknown in n unknowns systems.