Educator

Direct Variation

• A direct variation is given by an equation of the form y = kx, where k is a nonzero constant, called the constant of variation.

• The graph of a direct variation is a straight line with slope k and passing through the origin.

• You can solve problems involving direct variation when you are given values satisfied by the direct variation and asked to find a missing value. First, use the given values to find k. Then use k to find the unknown value.