Question

Let f(x) = 7x - 13. Find f-1(x)

Answer 1

the 1 is an exponent

Answer 2

f^(-1) (x) is the inverse function of x.

To find the inverse function, interchange x with y, and y with x, then solve for y.

In your problem, y = 7x - 13

So the inverse is x = 7y - 13.

Now solve for y, and that will be the inverse function of y = 7x - 13.

Answer 3

what's your inverse function?

Answer 4

JAMALB..whats your answer?

Answer 5

sorry... what's the inverse function again...?

Answer 6

JAMALB, yes, the mathematical notation for the inverse of a function f, is f^(-1) which the -1 is the exponent.

Answer 7

no, just up above @Easyaspi314
u said:
In your problem, y = 7x - 13

So the inverse is x = 7y - 13.... this isn't the inverse

Answer 8

I said that you need to solve for y in the equation x = 7y - 13

Read above what I wrote!

Answer 9

I wanted JAMALB to solve that for y.

Answer 10

im working it now

Answer 11

ok

Answer 12

ah, my bad, i thought u meant that was ur inverse equation, all good then

Answer 13

Best is that if you come in the middle of a conversation, first read all of the posts, then feel free to jump in.

Answer 14

no, it wasnt that, it was the phrasing of "So the inverse is x = 7y - 13"
i did read from the top down

Answer 15

x=7y-13

7y=x-13

y=x-13/7

Answer 16

JAMALB, thats incorrect.

x = 7y - 13

First, add 13 to both sides of the equation, you get
x + 13 = 7y

Now divide both sides by 7, you get
y = (x + 13)/7

Answer 17

If you are interested in knowing the meaning of inverse function of f(x) = 7x - 13:

In f(x) = 7x - 13, we can put various values for the independent variable x and compute f(x).

With inverse function we are asking if we are given f(x) how will we compute x?