Linear Interpolation Formula
Estimates a value between two known data points using a straight-line relationship.
Formula
y = y₁ + (x - x₁) × (y₂ - y₁)/(x₂ - x₁)
Discipline: Mathematics. Result unit: dimensionless.
Variables and units
- y — Interpolated Value: Estimated dependent value
- x — Target Position: Independent value at which to interpolate
- x₁ — First X Value: Independent value of the first known point
- y₁ — First Y Value: Dependent value of the first known point
- x₂ — Second X Value: Independent value of the second known point
- y₂ — Second Y Value: Dependent value of the second known point