Question

Consider the following scenario describing the residents of Charlestown: The list pairs resident's ages with their zip codes.

Does this scenario represent a function?

No, because people who are the same age can have different zip codes
No, because people who have the same zip code can be different ages
Yes, because people who are the same age can have different zip codes
Yes, because people who have the same zip code can be different ages

Answer 1

@calculusxy

Answer 2

Zip Codes represent the y-values and the ages represent the x-values.

Function = a domain needs to have specific ranges

If you think about it, it would be a function if people who would have the different ages, x, would have same zip code, y. When graphed it would be like:

This would pass the vertical line test

Answer 3

so C?

Answer 4

I think maybe B. Although I am 100% sure.

Answer 5

its b for sure?

Answer 6

As I said, I am not 100% sure.

Answer 7

oh, ok.. next!
Given the relation y = –4x2 – 8, if the input is 2, what is the output?

8
–8
–16
–24

Answer 8

But you can try it out if you'd like

Answer 9

I am assuming that the function is
\(y = -4x^2 - 8\)

Substitute 2 for \(x\)
\( y = -4(2)^2 - 8\)

What do you get?

Answer 10

@volleyballlover55 I have to leave in like a minute :\

Answer 11

is it -8?

Answer 12

If you need to put an nenrt do ^c

Answer 13

No.
\( y = -4(2)^2 - 8\)
\( y = -4(4) - 8\)
\( y = -16 - 8\)
\( y = -24\)

Answer 14

oh D!

Answer 15

hey @smartnerd1111 since @calculusxy , can you help me with some more please? :)

Answer 16

Well i am ow rightn maygbe in 10 min.n

Answer 17

your leaving in 10 min?

Answer 18

i just have 3 more questions :)

Answer 19

I am coming in ten min

Answer 20

oh ok! but please come back :)

Answer 21

come to my new post! :)