99!

test on relations and functions

1. find the inverse of the function f(x) = 3x – 7, show all work!

2. use a mapping diagram to represent the relation {(2,4), (3,4), (4,4), (5,4)}, state if the relation is a function.

3. draw a graph on the coordinate plan that represents a function. explain your reasoning!

for questions 4-8, use the above graph.

4. evaluate f(2).

5. list all x-intercepts.

6. evaluate f(-0.7)?

7. evaluate f(1.9)?

8. it the graph a function? explain your reasoning.

9. if f(x) = 3x-6, what is f(-9)?

10. if f(x) = 42 + 3, what is f(-2)?