Question

Which is not a function?
Choose one answer.

Answer 1

a. The set of ordered pairs: two comma five, three comma eight, five comma two, and eight comma three.
b. A mapping diagram is shown. The domain column contains the numbers 4, 9, ten, and twelve. The range column contains the numbers 1, 3, 5, and 6. A line connects 4 and 5. A line connects 4 and 6. A line connects 9 and 1. A line connects ten and 3. A line connects twelve and 6.
c. A table of x and y-values. When x is one, y is four. When x is 2, y is 6. When x is 3, y is eleven. When x is 8, y is twelve.
d. The set of ordered pairs: 1 comma 6, 2 comma 3, 4 comma 2, and 5 comma 8.

Answer 2

a function will not have 2 x values that are the same...they can have any number of y values the same, just not the x values. Another thing you should know is that the domain is all the x values and the range is all the y values.
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set of ordered pairs : (2,5)(3,8)(5,2)(8,3) --- this is a function because there is not 2 x values that are the same.

domain column contains 4,9,10,12 (these are the x values)
range column contains 1,3,5,6 (these are the y values)
I am not sure about this one...

when x = 1, y is 4....(1,4)
when x = 2, y = 6 ..(2,6)
when x = 3, y = 11...(3,11)
when x = 8, y = 12...(8,12)
this is a function because there are no x values that are the same

(1,6)(2,3)(4,2)(5,8) -- this is a function because there are no x values the same

well...by process of elimination, I think your answer is B

Answer 3

Thank you so much i'm not very good at those :)!

Answer 4

neither am I....some of them I know, just wasn't sure about the second one