1. Translation of a units to the right and b units up has rule:
(x,y)→(x+a,y+b).
Then the function is

2. Reflection across the y-axis acts in following way:
(x,y)→(-x,y).
Then the function is

3. Reflection across the x-axis acts in following way:
(x,y)→(x,-y).
Then the function is

4. Rotation of 90 degrees counterclockwise about the origin, point O acts bu the rule:
(x,y)→(-y,x).
Then the function is

5. Rotation of 180 degrees counterclockwise about the origin, point O acts bu the rule:
(x,y)→(-x,-y).
Then the function is

6. Rotation of 270 degrees counterclockwise about the origin, point O acts bu the rule:
(x,y)→(y,-x).
Then the function is

Basically just do the problem backwards.
72÷9=8
72÷8=9
Uh I don’t think so.
Sorry! But stay safe! :)
Could it be 12? Difference between 16-13=3, 13-7=6. 4-3=1, 3-1=2. Seems as if for each column, difference between first and second row is one half the difference between the 2nd and third rows