Linear Interpolation

X Coordinates

X₁ (First value)

X₂ (Second value)

Y₁ (First value)

Y₂ (Second value)

X (Value to interpolate)

For X = 37, Y = 4.400

Equation : Y = Y₁ + (X - X₁) × (Y₂ - Y₁) / (X₂ - X₁)

Linear interpolation is a mathematical method that estimates a value between two known points using a straight line.

Point 1

(30, 3)

Point 2

(40, 5)

Interpolated result

(37, 4.400)