Which of the following function(s) is an accurate description of the graph for the range(s) indicated?

1. $y=2x+4 \text{ for } -3 \leq x \leq -1$
2. $y= \mid x-1 \mid \text{ for } -1 \leq x \leq 2$
3. $y= \mid\mid x \mid -1 \mid \text{ for } -1 \leq x \leq 2$
4. $y=1 \text{ for } 2 \leq x \leq 3$
1. i, ii and iii only
2. i, ii and iv only
3. i and iv only
4. ii and iv only