Question 2: (Identifying functions from equations) Which of the following represents functions?

Step-by-step explanation:

1 n

2 f

3 f

4 n

`1234567890-=/*-qwertyuiop[]asdfghjkl; '\\zxcvbnm,./+ /

step-by-step explanation:

the true statements are:

r = set of real numbers

n = set of natural numbers, 1,2,

w = n u{0} = {0,1,}