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)?

i can only answer a few questions, sorry.

5. (-0.7, 0), (0.76, 0), (2.5, 0)

8. function because each input has only one output

9. -33

10. -81

answer: the answer is one of

step-by-step explanation:   we are given to write a proper fraction where the whole is divided into an even number of equal parts less than ten, and an odd number of those parts exist.

an even number less than 10 may be one of 2, 4, 6 or 8. so, the whole may be one of these four evens.

now, an odd number of these parts must exist, so the numerator must be an odd number, one of 1, 3, 5 or 7. it cannot be 9 because then the fraction will become improper.

thus, our fraction may be one of the following

28

step-by-step explanation:

8+8+6+6