Question

What is the inverse of the function f(x)=1/3x-2
a f-1(x)=3x-6
B f-1(x)=3x+6
C f-1(x)=-3x+6
D f-1(x)=-3x-6

Answer 1

Put y = f(x)

y = 1/3x-2

Solve for x

Answer 2

How do I do that

Answer 3

Isolate x on one side of the equation

Answer 4

Can u solve it for me please

Answer 5

Hey to find the inverse of functions you got to do 4 steps.

1. Substitute f(x) with y.
2. Reverse the x and y variables.
3. Solve for y.
4. Replace y with f^-1x

Answer 6

Ok

Answer 7

Can you do the first step?

Answer 8

Y=1/3x-3

Answer 9

Everything's good but you accidentally wrote the last number wrong :) it's 2 :). Now can you do the 2nd step? ;)

Answer 10

So i add 2 to the other side

Answer 11

That's a bit later, but don't forget the 2nd step says to Reverse the x and y variables. Since our function is now y=1/3x-2, we'd switch the x & y over, and it'd now be
x=1/3y-2 :) Do you get it so far? :)

Answer 12

and yeah on the 3rd step you'd then add 2 to both sides, & multiply by 3 to both sides as you're solving for y.

Answer 13

Yeah . do now lol I forgot about that part tthat's whats been screwing my up

Answer 14

If you forget, just use this problem to help you and eventually you'll be fine :) Did you get the answer? :)

Answer 15

No I'm confused again likeep how can u divided 1/3

Answer 16

*like

Answer 17

oh okay :) well we got x+2=1/3y
To eliminate the 1/3, if we multiply it by it's reciprocal (opposite) which is 3, the 1/3 & 3 will cancel out leaving the y by itself :) and then we'd multiply 3 to the other side as well :) did you get that? :)

Answer 18

you multiply instead to cancel out the fraction by it's opposite number :)

Answer 19

Ohh pellet . Feel stupid now ugh

Answer 20

pellet

Answer 21

dam

Answer 22

its okay :) everyone makes mistakes so it's a good thing you know how to :) I myself just learned this 2 days ago :p I made mistakes at first but I got it afterward :)

Answer 23

Okeyyy thanks sooo much

Answer 24

no prob. :) hey by some chance do you take algebra 2 on flvs? o.O

Answer 25

No im tmaking it i. School some of it is eeasy but some of it is just plan out hard why

Answer 26

oh okay, no prob. :) I take Alg. 2 on flvs so was just wondering bc just learned this as well :) well best of luck but i g2g now so bye :)

Answer 27

OK bye