Question

Is this relation a function?
4 10
7 8
10 14
12 11

Answer 1

look at the x column. Do any x values repeat?

Answer 2

no

Answer 3

Do you know the definition of a function?

Answer 4

so that means there are no x values that lead to multiple y values. So we have a function here

IF (for example) we had x = 4 lead to y = 10 AND y = 13 at the same time, then we wouldn't have a function

Answer 5

Yes every x-value (input) leads to exactly one y-value (output).

Answer 6

okay, cool thank you.