Saturday

October 25, 2014

October 25, 2014

Posted by **Jessica** on Friday, September 14, 2007 at 11:58pm.

Find the inverese of the one to one function.

9. f(x)=-4x+7

Is the inverese suppose to be

f^-1(x)=x-7/-4?

12. f(x)= square root of x-8

I dont understand how to find the inverese on this one.

16. f(x)= 4/(5x-1)

I dont understand how to find the inverese on this one.

- Inverse of one to one function -
**drwls**, Saturday, September 15, 2007 at 1:04am9. The inverse function gives you x back if the dependent variable is f(x). Call f(x) "y"

y = -4x + 7

x = (1/4) (7-y)

Now you can switch y and x, since it is a "dummy" variable anyway.

f^-1 (x) = (7-x)/4

12. y = (sqrt x) - 8

y+8 = sqrt x

(y+8)^2 = x

f^-1 (x) = (x+8)^2

**Answer this Question**

**Related Questions**

One to one functions - I still need help with finding the inverese of one to ...

Algebra-One to one function - Could you please check my answers and help me with...

math - Determine the equation of the inverese of the quadratic function f(x)=x^2...

Math, Still Need Help! - Label each statement TRUE or FALSE. a. The sum of two ...

Inverese of function - f(x)=x^4 -3, g(x)=4th square root x-3, h(x)=x^4 + 3 Would...

Math AP Calc - Label each statement TRUE or FALSE. a. The sum of two one-to-one ...

College math - Determine whether the following function is a one-to-one function...

College math - Determine whether the following function is a one-to-one function...

College math - Determine whether the following function is a one-to-one function...

Pre-Calculus - The function f(x)= x^4 is not one-to-one. Find a suitable ...