Identify which table does not represent a function based on input-output relationships.
Four tables labeled Q, R, S, and T show relationships between x (inputs) and y (outputs). Table Q has x values -2, 1, 3, 5 with corresponding y values -3, 3, -3, 3. Table R has x values -1, 2, 3, 4 with y values -5, 4, 7, 10. Table S has x values -2, 1, 3, 5 with y values 3, 3, 3, 3. Table T has x values 3, 4, 3, 4 with y values 4, 5, -4, -5. The question asks which table does not represent a function.