Which table shows y as directly proportional to x?

table
1. x / -9 /-18 /-6 /-12
y / -4 /-2/-6/-3
2. x / 24/29/72/18
y / 6/7/8/9
3. x / -6 /12/-8/-1
y / -4/2/-3/-24
4. x /7/-13/-6/29
y / 49/-91/-42/203

1.Table 1
2. Table 2
3. Table 3
4. Table 4

Table 4.