Identify the set of ordered pairs that represents y as a function of x. {(0, 0), (1, 1), (1, 1), (3, 3)} {(−2, 0), (−1, 0), (1, 0), (2, 0)} {(0, −2), (0, −1), (0, 1), (0, 2)} {(1, 0), (1, 1), (2, 1), (2, 2)}

Bob is putting books on a shelf and takes a break after filling 18 1/2 inches on the book shelf. the book shelf is now 2/3 full. how long is the entire bookshelf?

Yesterday, george drank 1 small bottle and 2 large bottles, for a total of 1,372 grams. the day before , he drank 1 small bottle and 1 large bottle, for the total of 858 grams. how many grams does each bottle hold?

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1