Functions Math

Is this table a function or not a function? 

• Function

• Not a Function

Is this a function or not?

• Function

• Not a Function

What is the output?

• 35

• 15

• 8

• 53

What is the output?

• 19

• 145

• 9

• 8

What is the output?

• 36

• 18

• 9

• 63

Find the output.

• 25

• 52

• 10

• 7

Find the output.

• 17

• 55

• 30

• 37

Input:  2  →  Rule: 3x → Output: ?

• 5

• 6

• 32

• 23

Input: 5 → Rule: 2x+1 → Output: ?

• 11

• 26

• 8

• 53

Input: -1 → Rule: x-3 → Output: ?

• -2

• -1

• -4

• 1