### Linear interpolation

Interpolation Calculator calculates the unknown interpolated coordinate between the two known coordinates. Normally Linear Interpolation is called as Interpolation.

$$f(x) = f(x1)+(x-x1) \frac{f(x2)-f(x1)}{x2-x1}$$
 x f(x) x1 x2 x 80

### Explain

$$f(14) = 100 + (14 - 10) \frac { 50 - 100 }{20 - 10} = 80$$

You can see Bilinear interpolation calculator.