Which relation is not a function?

A

For something to be a function every x value bust have at most 1 y value and in A 9 has 2 y values so it cant be a function

answer: i believe its b. if you sound out the sentences that sounds wrong.

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⭐