QUIZ: Function vs non function and evaluating

How would you write y = 2x - 3 in function notation?

• y = 2x-3

• f = 2x - 3

• f(x) = 2x-3

Does this mapping diagram represent a function?

• No, because there are repeating input values
• Yes, because there are no repeating input values

• Function
• Not a Function

• Function
• Not a Function

• Function
• Not a Function

Is this table a function and how can you tell?

• Yes its a function because there are not variables for missing numbers
• No it's not a function because the y value 4 repeated
• No it isn't a function because the x value 2 is repeated
• No it's not a function because the x value 5 has y values of  10 & 12

Is the following relation a function?
{(1,5), (1,7), (3,9), (4,11)}

• Yes
• No

• 8

• -24

• 24

• -22

• 24

• -6

• 32

• 36

• -21

• 33

• 15

• -3