∝

Direct Variation Calculator

Solve y = kx direct variation problems

x value

y value

Basic Formula

y = kx

k is constant of variation

Alternative Form

y ∝ x (y varies directly with x)

Proportional relationship

Finding k

k = y / x

Given a point (x, y)

Graph Property

Straight line through origin

Slope = k

Physics

• Distance and time

• Force and acceleration

• Hooke's law

Economics

• Cost and quantity

• Wages and hours

• Price relationships

Science

• Chemical concentrations

• Proportional growth

• Linear relationships