Question

Which of these is a function please answer.

Answer 1

1 and 3

Explanation:

Answer 2

• Options 1 and 4

Explanation:

Option 1

• x-values are different and y-values are same
• This is a function

Option 2

• x-values are repeated (3) with different y-values
• This is not a function

Option 3

• x-values are repeated and y-values are different
• This is not a function

Option 4

• x- values are different, y-values are different
• This is a function