I’ll just tell the last one and help you analyse in your head
You add 2 in the x inside the function
This means that the value of x that was coming at 0 now comes at -2
So, graph shifts to the left by -2
Now we multiply pie to this
What happens?
Clearly graph stretches such that the value that was y now comes as 3.14y
Now they tell us to subtract 5
So graph finally moves down by 5 units
So, it shifts to the left by 2 units, goes down by 5 units and stretches by pie times