Answer:
2, 2
Explanation:
As the diagram number goes up by 1, it looks like the number of tiles goes up by 2; 4 + 2 = 6, 6 + 2 = 8, etc. This means that the growth, or slope, is 2; the number of tiles is 2 times the diagram number. But, we can't stop there, because 1 times 2 is 2, not 4, and 2 times 2 is 4, not 6. Well, what is 4 - 2, and what is 6 - 4? The answer to both of these expressions is 2. This tells us that we also have to add 2.
Here's me checking my work on all of the values in the table:
1 × 2 = 2 and 2 + 2 = 4
2 × 2 = 4 and 4 + 2 = 6
3 × 2 = 6 and 6 + 2 = 8
4 × 2 = 8 and 8 + 2 = 10
If you need more help with that, let me know. :)