Me with this one asap (will mark brainlest)

This is fractions casey shared a pizza with some friends. they each ate 1 third of the pizza. how many people shared the pizza

Which is a graph of a proportional relationship?

20.ju inces. which ordered pair is a viable solution if x represents the number of books he orders and y represents the total weight of the books, in ounces? (-3,-18) (-0.5, -3) (0,0) (0.5, 3)