Question

Which table could NOT represent a function?

input 0 1 2 3 4
output 2 4 6 8 10

input 30 40 50 60 70
output 21 11 -1 -11 -21

input 4 9 14 19 24
output 10 12 14 16 18

input -10 -10 0 0 10
output 8 16 24 32 40

Answer 1

The last one is correct because the x repeats
If the x repeats it’s not a function

Answer 2

The fourth one

Explanation:

Just cause its right