A local store makes and sells handmade ceramic cookware.the store earns a profit of one dollar more on each plate sold than it earns by selling one cup.if the profit the store earns in one day on the

A local store makes and sells handmade ceramic cookware.the store earns a profit of one dollar more on each plate sold than it earns by selling one cup.if the profit the store earns in one day on the sales of cups and plates is given by the expression kx+(k-1)y what does y represent if the k is the profit earned from selling each plates