Which relation is a function? {(2, 3), (1, 5), (2, 7)} {(-1, 5), (-2, 6), (-3, 7)} {(11, 9), (11, 5), (9, 3)} {(3, 8), (0, 8), (3, -2)}

The second one

Step-by-step explanation:

In a function an input has a distinct output, so if I put 3 into a function and got 8, that is my answer and nothing else, if I put 3 again and get -2 then it isn't a function because I got a different answer. In the 1st, 3rd and 4th one there are two outputs for the same input so they aren't functions.

u dumb boi

step-by-step explanation:

7! = 7×6×5×4×3×2

3! = 3× 2

as 7! is multiple of 3! because 7! contains 3! that is 3× 2 as factor

so 7! /(3! ) = 7× 6× 5× 4

= 42 × 20

= 840

its b) 840✌✌✌

dhruv⭐