Answer:
Below
Explanation:
Nothing too complicated here, you're just finding points on the line.
For the first one, the missing blank is 2
For the last one, the missing blank is 18
To find these, just look whether the provided number is on x or y, then go along either the x or y axis to find that number. Then go in the other direction until you hit the line, and your answer should be there. The full table is:
x | y
-------------------
2 | 6
4 | 12
6 | 18