Hey there!!
f(x) is basically ' y '
In order to inverse a equation, we will need to switch the values of x and y
The equation :

Now switching the positions :




This is the inverse.
Hope my answer helps!
<span>One side of a rectangular fish tank can be best represented by a plane because it is two dimensional.Whereas,point,line or a ray are all one dimensional and hence they cannot represent a rectangle as it has two dimensions.</span>
That would be a scalene because none of the sides are congruent (the same size)