Question

Can someone please hep me solve Let f(x) = 2x - 6. Solve f-1(x) when x = 2

Answer 1

you need to solve this \(2x-6 = 2\)

Answer 2

the x in the inverse function is the y in the original function.

Answer 3

can you show me how

Answer 4

add 6 to both sides and what do you have?

Answer 5

so the answer would be 4

Answer 6

correct

Answer 7

can u help me with one more please

Answer 8

this question is asking

what do you need to put in f(x) to get out 2

i.e. what is f^-1(2)

Answer 9

sure

Answer 10

Let f(x) = x2 - 16. Find f-1(x)

Answer 11

f-1(x) = 2

Answer 12

can u show me how you did it please

Answer 13

this function does not have an inverse

Answer 14

?? that was an inverse
thought it was a prime

Answer 15

sorry my bad

Answer 16

these are the answer choices they gave me

4 square root of x

±square root of x plus 16

x squared over 16

1 over quantity of x squared minus 16

Answer 17

\(f(x) = x^2-16\) this function does not have a inverse

Answer 18

but the answer they want is the second one

Answer 19

but it is wrong lol

Answer 20

idk the answers i gave you were the answer choices to that equation

Answer 21

they are looking for the second answer

Answer 22

but this question is flawed and should be removed from the book/source. Tell your teacher that.

\(f(x)\) means a function, and thus \(f^{-1}(x)\) must also be a function, but +-sqrt{x+16} is not a function.

Answer 23

i.e. f(x) must be onto and one to one, which it is not.

Answer 24

ok i will and thank you

Answer 25

the question should have said, what function models the inverse image of f(x)