Question: Which set of ordered pairs represents a function?
A) ((-20,30),(-40,0),(-40,50)\})
B) ((-30,0),(-30,20),(-30,50)\})
C) ((-40,0),(20,-30),(60,-50)\})
D) ((-50,0),(20,-30),(-50,60)\})
Correct answer: C
Grade: 8 | Topic: Functions | Difficulty: Medium | Standard: 8.F.A.1