Decide whether or not each table below could represent a function. If not, circle what you see that tells you it’s not a function. In a function, there is exactly one y-value (or output) for each x-value (or input). If a table has more than one y-value (or output) for the same x-value (or input), it can not represent a function.

x y

0

3

1

2

2

5

3

6

4

5
x y

5

3

1

4

-3

5

3

6

2

7
input output

0

2

5

2

2

2

6

2

3

2
x y

1

0

1

1

1

2

1

3

1

4

Function or Not?

Function or Not?

Function or Not?

Function or Not?
tickets $

2

0

1

2

2

4

3

6

4

8
input output

-4

-2

-3

-1

-2

0

-1

1

0

2
x y

10

9

3

2

9

8

17

16

3

5
C F

-40

-40

0

32

10

50

37

98.6

100

212

Function or Not?

Function or Not?

Function or Not?

Function or Not?
input output

0

7

-1

2

4

3

8

6

-5

-8
$ games

10

5

11

25

12

45

13

65

14

85
x y

8

10

6

5

4

0

6

-5

8

-10
miles minutes

0

0

1

2

2

4

3

6

4

8

Function or Not?

Function or Not?

Function or Not?

Function or Not?

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