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

Ican 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

The following statements are true about exponential functions:
-The domain is all real numbers.
- The input to an exponential function is the exponent.
- The base represents the multiplicative rate of change.

The reason why the other two options are wrong are explained below:
The range of exponential functions is not always includes negative numbers; on the contrary, the range is the set of all positive real numbers.

The graph of an exponential function does not have a horizontal asymptote at x = 0; contrarily, the equation of the horizontal asymptote of the graph of is y = 0, which is the x-axis.