PLEASE EXPLAIN, HOW DO U DO THIS? MATH....10 POINTS!!!!!!!!! readddddd?

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! :)

3. y= (-1/2)x + 7

Answer 1

dude, all you need tod o is substitute the y and the x... so problem 3 will look like

x= (-1/2)y+7.. now u just solve for y

-2(x-7)= y

-2x+14=y  is your answer!~

Answer 2

just substitute the x and the y.. the problem will look like..

x = (-1/2)y+7.. now u solve for y

-2(x-7) = y

-2x+14 = y is your answer!!!