Monday

April 21, 2014

April 21, 2014

Posted by **Sara** on Wednesday, January 11, 2012 at 9:10am.

f(x)= 6-2/5x g(x)=15-5/2x

- math -
**Steve**, Wednesday, January 11, 2012 at 5:30pmjust plug and chug:

(I rewrite 2/5x as 2x/5 to avoid ambiguity)

f(g) = 6 - 2g/5 = 6 - 2(15 - 5x/2)/5

= 6 - (30 - 5x)/5 = 6 - (6 - x) = x

g(f) = 15 - 5f/2 = 15 - 5(6 - 2x/5)/2

= 15 - (30 - 2x)/2 = 15 - (15 - x) = x

**Related Questions**

Algebra - I have to find the inverse function of f(x)=3-4x. I got y=3-x/4 for ...

algebra 2 - for each function, find an equasion for the inverse. then use ...

math - The cost of producing q articles is given by the function C=f(q)=100+2q...

Maths B - (a) What is the inverse of the function y = 3x2 ? (b) On the same set ...

algebra 2 - for each function, find an equasion for the inverse. then use ...

algebra 2 - for each function, find an equasion for the inverse. then use ...

algebra - 1 (a) A function passes through the points (0, -5), (1, 0), (2, 7). ...

College Algebra - Find the inverse of the function below. Graph the function ...

math help1 - Okay I am a little bit confused about one math question can you ...

pre calculus - Find the inverse of the function below. Graph the function below ...