Question

Help please

Answer 1

@Vocaloid @pooja195 Masters of Math.

Answer 2

^ @JustSaiyan

Answer 3

I don't Math. I do everything else.

Answer 4

I'm not sure if this will help...

Answer 5

To figure out if it is a function you can use the vertical line test.

Answer 6

We know that this is a function because the lines do not hit the points twice

Answer 7

Can you figure out whether it is one to one or not?

Answer 8

Sorry I was afk

Answer 9

Okay so the first graph is function?

Answer 10

good, it's a function

Answer 11

then apply the horizontal line test to see if it is one to one or not

Answer 12

it is not one to one

Answer 13

good, so it would be "function but not one to one"

Answer 14

repeat these steps for the circle graph

Answer 15

circle is not a function

Answer 16

good so you would write "not a function"

there's no need to do the horizontal line test in this case

Answer 17

wait is this for the second graph with little circles on it or the one big circle

Answer 18

OH

Answer 19

look at the two pictures I posted

Answer 20

yeah it would be for the big circle

Answer 21

for the second one it would be one to one function

Answer 22

it doesn't pass the horizontal line test

Answer 23

ohh not a function

Answer 24

it's a function (passes vertical) but not one to one (fails horizontal)

Answer 25

actually it is a function but not one to one

Answer 26

anyway, for the last one, (the straight line) what do you think?

Answer 27

one to one function

Answer 28

awesome

Answer 29

so the first graph is function but not one to one
the second is one to one function
the third is not a function
the fourth is not a function
and the fifth is one to one function

Answer 30

when you say "second one" are you talking about the one with the little open/closed circles?

Answer 31

yes

Answer 32

they should be in order :S

Answer 33

second function is not one to one (fails horizontal line test)

Answer 34

so it is a function but not one to one

Answer 35

yes

Answer 36

ok I might be a little scatterbrained today but I only see 4 functions

Answer 37

I'm sorry my fault

Answer 38

\(\color{#0cbb34}{\text{Originally Posted by}}\) @zarkam21
so the first graph is function but not one to one
the second is one to one function
the third is not a function
the fourth is not a function
and the fifth is one to one function
\(\color{#0cbb34}{\text{End of Quote}}\)

Answer 39

Now it should match up

Answer 40

the third one (the curvy line) passes both the horiz and vert line tests

Answer 41

so the third is a one to one function

Answer 42

everything else is good

Answer 43

I'm going to go pick up my lunch I'll be back in like 20 mins

Answer 44

I am back

Answer 45

So for reasoning that needs to be provided... I wrote for function but not one to one that it is so because it fails the horizontal line test

Answer 46

@Vocaloid

Answer 47

yes, that is sufficient

Answer 48

and for the one to one functions I just wrote that there is one value that satisfies each point

Answer 49

I'm not sure exactly what you mean by that

Answer 50

are you saying that there is exactly one y for every x?

Answer 51

yes

Answer 52

Let me re-word that.

Answer 53

I am being a bit clumsy

Answer 54

This is a one to one function which means that for every x value there is a y value.

Answer 55

Sufficient?

Answer 56

yes, be sure to specify that they are "unique" values

Answer 57

every x gets a unique y, so no y-values repeat themselves for the entire function

Answer 58

Okay so for not a function just say that does not pass the horixontal and vertical test

Answer 59

good