Asif wants to open a lemonade stand during a town fair. He buys a pitcher and lemonade concentrate from a store for this purpose. At the lemonade stand, the cost for each cup of lemonade will be the same. If Asif sells 32 cups of lemonade, he will have a profit of $0.If he sells 45 cups of lemonade, he will have a profit of $16.25
Determine the rate of change for a function that represents Asifs proft, y, in dollars, from selling x cups of lemonade.