At what molarity is the sucrose solution isotonic to the cells? (solve for x, when y = 0)

The molarity is the sucrose solution isotonic to the cells and when we solve the x when the y is equal to zero, the molarity is 0.3123 M. The molarity or M is calculated by finding the molar mass of the solute and convert the grams into moles then divide the number of moles by the number of liters and this is what you get the final answer or the molarity.