INVERSE FUNCTIONS? MATH.....WHAT THE h**l IS THIS? LOL....10 pts.?

Question

Says:

Determine the inverse functions for the functions below. Begin by switching varaiables in the original function, then solving for the 'new' y. For each case sketch the function and its inverse.

Have no idea what this is or what to do. Please explain how u found answer. 10 Points! :)

1. Y= 3X - 12

Also says to list inverse function and invariant.

Answer 1

y=3x-12

So, start by switching x and y.

x=3y-12

Solve for y.

x+12=3y

3y=x+12

y=[x/3]+[12/3]

y=(1/3)x+4

slope=1/3

y-intercepts=4

peace