Answer:
(x,y) ---> (y,-x)
We switch the x and y values, and make the x value the opposite.
Explanation:
We are basically shifting the entire graph by aplying these changes.
By inverting the x and y axis, we are changing the domain and range of the function. We are switching the original values.
By multiplying by -1 we are effectively changing the orientation 180 degrees.
Lets do an example with
y = sin(x)
picture 1
x = sin(y)
picture 2
x = -sin(y)
picture 3