Algebra 2 QUIZ: 7.1 - 7.3

Print your answers CLEARLY in the underlined space provided. If it's illegible, it's wrong.

NO DECIMAL ANSWERS!

(#1 -6) Given f(x) = - x - 7 and g(x) =2 -6, find each of the following. Simplify; list any restrictions.

( - X - 7 ) + ( 2x 6 )

1. ( f + [Xx )

2 . (f - g)(x)

( 1 . 8 0 )

4 . (f + g) (x)

5 . ( fog ) (x )

6. (g . f) (x)

Given f(x) = 5x - 8 and g(x) = 3x -5, find each of the following.

7. (fog) ( -3)

8. (go f ) ( - 3)

(#9 - 13) Find the inverse of each function. Write it as: f-(x)=_

9. f(x) = 3x +4

10. f ( x ) = - x +4

11. f(x) = x2 - 3

12. f (x ) = Vx+ 2

13. A formula for converting degrees Vulcan into Fahrenheit is: F(x) = -x +27

Find the inverse of F(x) and label it as V(x).

14. Use composition of functions to find (F . V)(x). Show all steps below, or NO credit!

15. Explain how you can prove or disprove that two functions, f(x) and g(x), are inverses.

Inverse functions flys is a function that undoes the function

that

responds