Fundamental Mathematics/Arithmetic/Arithmetic Equation/Linear Equation
In this equation,
- f(x) represents function
- a represents the gradient,
- x represents the x axis
- b represents the y-intercept.
Finding equation's root
To find value satisfy linear equation above by dividing both sides by a
Hence, x is the root of equation
Gradient is worked out by : , rise being the distance a line travels vertically, and run being the distance it travels horizontally. The y-intercept (or y-int) is the point on a linear graph where a linear equation crosses the y-axis. Similarly, the x-intercept (or x-int) is the point where a linear equation crosses the x-axis.
- indicates y-intercept
- indicates x-intercept
For every value of x there is a corresponding value as shown below
x 0 1 2 y b a+b 2a+b