Question

Please Help! I'll Medal and Fan.

1. Determine which relation is a function.
a) {(–3, 2), (–1, 3), (–1, 2), (0, 4), (1, 1)}
b) {(–3, 2), (–2, 3), (–1, 1), (0, 4), (0, 1)}
c) {(–3, 3), (–2, 3), (–1, 1), (0, 4), (0, 1)}
d) {(–3, 2), (–2, 3), (–1, 2), (0, 4), (1, 1)}

2.Determine which relation is a function.
http://gyazo.com/4426a3c74947cdecfca6a87dfca40830

Answer 1

Hi @IndiiAvery! Do you still need help?

Answer 2

@IndiiAvery

Answer 3

check here http://www.mathsisfun.com/sets/function.html this should help

Answer 4

Yes, Please. @AMYCARTER

Answer 5

To determine question 1, check the numbers in the domain of each pair (the second numbers) and see if any of them are the same and if there are numbers that are the same, it can not be a function.

For example let's try choice A.

(–3, 2), (–1, 3), (–1, 2), (0, 4), (1, 1) First pair Third Pair
↓ ↓
The first and 3rd pairs have the same domain, 2. See? -3,2 -1,2

Answer 6

So choice A can NOT be a possible answer.

Answer 7

Yes, Thank you @AMYCARTER and @TASL10th

Answer 8

Wait so you have your answers @IndiiAvery?

Answer 9

Yes. :)

Answer 10

which is?

Answer 11

Okayy, tell me which ones you chose so I can make sure :)

Answer 12

@IndiiAvery

Answer 13

For #1 i chose answer number b and for #2 I chose d, Did I choose right?

Answer 14

For #1 you are incorrect :/ {(–3, 2), (–2, 3), (–1, 1), (0, 4), (0, 1)}
The 3rd and 5th pairs have the same domain, 1

And #2 is also incorrect because two points intersect.

I can help you to solve these if you want @IndiiAvery?

Answer 15

Please and Thank you

Answer 16

@AMYCARTER

Answer 17

Okay let's start with #1!

Now we already know that A and B are not right.

Let's move onto C.

(–3, 3), (–2, 3), (–1, 1), (0, 4), (0, 1)

Are any of the points for the domain the same for any of the pairs @IndiiAvery?

Answer 18

-3,3 and -1,1?

Answer 19

Yep! Which leaves us with D right?

Answer 20

Yeah :D