Question

A?

Answer 1

@Vocaloid

Answer 2

it did pass the vertical test but not the horizontal test because there is more than one point for a value where the line is almost straight on the line

Answer 3

this is a bit tricky, but "almost straight" does not mean "straight"

even at very large x values the function is always increasing, ever so slightly

Answer 4

so it's always assigning brand new y-values to x-values, making the function one-to-one

Answer 5

so b or d ?

Answer 6

oh b =)

Answer 7

good