Linear equations

Linear equations

Linear equations are those equations that are of the first order. These equations are defined for lines in the coordinate system. 

Linear equations are also first-degree equations as it has the highest exponent of variables as 1

Linear Equations Formula

There are different forms to write linear equations. Some of them are:

Linear Equation	General Form	Example
Slope intercept form	y = mx + c	y + 2x = 3
Point–slope form	y – y1 = m(x – x1 )	y – 3 = 6(x – 2)
General Form	Ax + By + C = 0	2x + 3y – 6 = 0
Intercept form	x/x_0 + y/y_0 = 1	x/2 + y/3 = 1
As a Function	f(x) instead of y f(x) = x + C	f(x) = x + 3
The Identity Function	f(x) = x	f(x) = 3x
Constant Functions	f(x) = C	f(x) = 6

Where m = slope of a line; (x_0, y_0) intercept of x-axis and y-axis