👤
Answered

1) Which relation is not a function?

a) {(2,4),(1,2),(0,0),(-1,2).(-2,4)}
b) {(2,4),(1,1),(0,0).(-1,1),(-2,4)}
c) {(2,2),(1,1),(0,0).(-1,1),(-2,2)}
d) {(2,2),(1,1),(0,0).(1,-1),(2,-2)}

Answer :

D because of the vertical line test. The c input 2 has two different out puts meaning that it is not a function

In Trainings: Other Questions