Set of Ordered Pairs

1 (-2,2).(-1,0). (0,2). (1,4)}

2 ((1,0).(1,2), (1. 4). (1. 6)}

3. ((-1,5). (0.5). (1,5).(2. 5)} 4. [(-2,0). (0,2). (1, 1), (2,0)]

5. {(-2,3). (5.2).(0,1),(4,0)

Function

Not Function

Number of Points that Intersect a Vertical Line