318,485 views
14 votes
14 votes
Find the Inverse of f(x) = 3x -18

User Dean Grande
by
2.6k points

1 Answer

5 votes
5 votes

Answer:

y = 1/3x+6

Explanation:

Step 1

- Rewrite f(x) as y

f(x) = 3x-18 => y = 3x-18

Step 2

- Swap x and y

y = 3x-18 => x = 3y-18

Step 3

- Slove for y (By that it means isolate y)

x = 3y-18 (+18 both sides)

x+18 = 3y (Then divide both sides by 3)

1/3x+6 = y

Final Answer:

y = 1/3x+6

User Darren Burgess
by
3.1k points
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