Which determinants influence whether the price elasticity of demand is elastic or inelastic? Determinant That Influences Elasticity Drag appropriate answer(s) here changes in the prices of a complementary good the per-unit cost firms must incur to supply a good to the marketthe share of the budget spent on the good the existence of substitutes time and the adjustment processnecessities versus luxury goods Not a Determinant That Influences Elasticity Drag appropriate answer(s) here