Question

Find the inverse of the one-to-one function.

f(x) = 2x+5/7
A. f-1(x) =7/2x+5

B. f-1(x) =7/2x-5

D. f-1(x) =7x-5/2

Answer 1

you want the answer or how to find it ?

Answer 2

We can't give answers, we are supposed to help the student with the method.

Answer 3

solve for x and change to y

Answer 4

f(x) = 2x+5/7
How can we solve that for x?

Answer 5

I did it myself and got y=2x+5/2 but that was wrong
But this is what I did
y=2x+5/7
x=2y+5/7
y=7x+5/2
I don't know what I did wrong so no I want to know how to do it

Answer 6

you dont change y for x in the beginning

Answer 7

you have to solve for x first then change at the end

Answer 8

for some reason i am really stuck do I make them fractions

Answer 9

like this y= 2x/7 + 5/7

Answer 10

or do I multiply the top by 7
like this
y=14x + 35

Answer 11

u subtract 5/7 first

Answer 12

so 5/7 = 2x

Answer 13

y-5/7

Answer 14

so it is like this
y-5/7 = 2x

Answer 15

ya and you solve for x

Answer 16

so then i get
y - 5/14 = x

Answer 17

y/2-5/14

Answer 18

or 2y - 5/14 = x