# Arithmetic Course/Linear Function

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## Linear Function[edit | edit source]

Linear Function is a function of a Straight Line

## General Form[edit | edit source]

### Straight Line goes through point (0,0)[edit | edit source]

For every x there is y = x

- x | y
- -2 | -2
- -1 | -1
- 0 | 0
- 1 | 1
- 2 | 2

If f(x) = y Then f(x) represents a Straight Line through point (0,0) with Slope equals 1

### Straight Line goes through two points[edit | edit source]

If there is a Straight Line goes through 2 points (x_{o},y_{o}) , (x,y)

### Straight Line goes through Two Intercept Points[edit | edit source]

When

- x = 0 y = b
- y = 0 x = a

Function of a Straight Line that cuts the x axis at (0,a) and the y axis at (0,b)