Exercise 2
Direction: Think of a function as a set of ordered pairs (x, y) where no two distinct
pairs have the same first element, then identify whether the given relation is a
function or not.
1. {(-3,2), (-2,5), (-1,-8), (3,2)}
2. {(0,5), (0,4), (0,3), (0,2)}
3. {(8,0), (7,0), (6,0), (5,0)}
4. {(x,y) x = 7)
5. {(x,y)/y = 3}​

Answer:
1.Function
2.not function
3.function
4.not function
5.function
correct me if I'm wrong