Question

for the function f(x)=(8-2x)^2, find f^-1,determine whether f^-1 is a function
HELP PLEASE :))

Answer 1

inverse is

Answer 2

To find the inverse of a function swap the positions of x and y. Pretend that F(x) is y, so
y = (8 - 2x)^2
If we swap them it becomes.
x = (8 - 2y)^2
Now we solve for y
sqrt(x) = 8 - 2y
sqrt(x) - 8 = -2y
y = (8 - sqrt(x)) / 2

Answer 3

is it a function?

Answer 4

Yes, it is a function.

Answer 5

As long as x is never negative, however

Answer 6

thank you SO much, i really do appreciate the help (:

Answer 7

No problem XD.