Question

Is the relation {(3, 5), (–4, 5), (–5, 0), (1, 1), (4, 0)} a function? Explain.

Answer 1

If you input the same value for x do you ever see an output that is different?

Answer 2

In other words... the points are given in the form (x,y). The first number is the x the seconf number is the y. If we ever see two points with the same x value they better have the same y value too!

Answer 3

Are there any two points given with the same value of x?

Answer 4

no..

Answer 5

Correct! Since all the x values are unique, we can assume it is in fact a function.

Answer 6

Is there another one after this?

Answer 7

Yes. haha. couple more.

Answer 8

Lets see.. I bet one of them will not be a fuction, I will show you why.

Answer 9

Okay. I think i do! I got some that arent question like that to. theyre all mixed up!

Answer 10

grrr thats annoying... lol

Answer 11

I know!