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

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 calculator allows to **find the equation of a straight line** (of the form y=ax+b) from the coordinates of two points by specifying the calculation steps.

This calculator 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.

This example shows how to calculate the equation of the line that passes through the points of coordinates A[3;0] and B[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.

equation_straight_line(point1;point2)

equation_straight_line(`[3;1];[2;5]`) returns [y=13-4*x]

See also

- 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.
- Find equation of a straight line from two points : equation_straight_line. The equation straight line calculator 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.
- Pythagorean theorem calculator : pythagorean. The calculator uses the Pythagorean theorem to verify that a triangle is right-angled or to find the length of one side of a right-angled triangle.
- Solve for x calculator : equation_solver. The equation solver allows to solve equations with an unknown with calculation steps : linear equation, quadratic equation, logarithmic equation, differential equation.
- Inequality calculator : inequality_solver. Inequality solver that solves an inequality with the details of the calculation: linear inequality, quadratic inequality.
- Solve system of linear equations : solve_equations. The solver of systems of linear equations allows to solve equations with several unknowns: system of equations with 2 unknowns, system of equations with 3 unknowns, system with n unknowns.
- Countdown solver : arithmetic_solver. This countdown solver allows finding a target number from a set of integer in using arithmetic operations.