1. Functions Review
Math 1

2. Name the independent variable (InPUT)
Jenna rents a car to drive for the week. It costs $50 for the week plus $0.50 per each mile.
Name the independent variable (InPUT)

3. Decide whether this represents a function. Be prepared to explain.
Function: Yes/NO

4. Write a function rule

5. Find the domain and range of the given function.
Domain/range

6. Evaluate the function Evaluate the given function for x=-4 and w=2
f(x)= 3x + 2w -7
Evaluate the function

7. FIND THE RATE OF CHANGE. (Include units!)
A scuba diver is 30 feet below the surface of the water 10 seconds after he entered the water and 100 feet below the surface after 40 seconds. What is the scuba divers rate of change?
FIND THE RATE OF CHANGE. (Include units!)

8. Decide whether this represents a function. Be prepared to explain.
{(0,2), (3,1), (-4,5),(2,2),(3,-4)}
Function: Yes/NO

9. Suppose a van gets 22 mi/gal
Suppose a van gets 22 mi/gal. The distance travelled is a function of the gallons used.
Write a function rule

10. x -4 -3 -2 -1 y 9 8 7 6
Write a function rule

11. Domain/range Find the domain and range of the following relation.
{(-3,8), (4,-3), (1,6),(2,2),(0,6)}
Domain/range

12. Function: yes/no

13. Name the independent variable (Input)
The width, w, of a sheet of plywood is one half of the length, l
Name the independent variable (Input)

14. A store bought a case of disposable cameras for $300
A store bought a case of disposable cameras for $300. They charge 6 dollars for each camera. Write a function for the profit the store makes.
Write a function rule

15. Tell whether it is a function or not. Be prepared to explain.
Function: yes/no

16. Find the rate of change between year 2 and 4.

17. Write a function rule Write a rule in function notation for the table.x -2 2 4 y 1 3
Write a function rule

18. Evaluate Evaluate to find the range for the given domain.
f(x)=-4x D:{-2,0,2,4}
Evaluate

19. Function: yes/no

20. Find the rate of change between 11 am and 1 pm
Find the rate of change between 11 am and 1 pm? What could be happening there?

21. x -3 3 6 y 1 -1 -2
Write a function rule