i need help figuring out if these are a Function or Not a Function (if someone can also leave an explanation cause I rly don't understand any of this)

i need help figuring out if these are a Function or Not a Function if someone can also leave an explanation cause I rly dont understand any of this class=
i need help figuring out if these are a Function or Not a Function if someone can also leave an explanation cause I rly dont understand any of this class=
i need help figuring out if these are a Function or Not a Function if someone can also leave an explanation cause I rly dont understand any of this class=
i need help figuring out if these are a Function or Not a Function if someone can also leave an explanation cause I rly dont understand any of this class=
i need help figuring out if these are a Function or Not a Function if someone can also leave an explanation cause I rly dont understand any of this class=