Question

1.
Which of the following is an example of an exponential function?


A. f(x) = 4
B. f(x) = 4x
C. f(x)= 4/x
D. f(x) = 6x

Answer 1

Which one do you think?

Answer 2

umm maybe C

Answer 3

Yes, you can exclude A which is just a horizontal line y=4, Exclude B and C that are leniar lines with slopes of 4 and 6 respectively.

Also, looking at C

\(\LARGE\color{blue}{ \bf \frac{4}{1},~~ }\)\(\LARGE\color{blue}{ \bf \frac{4}{2},~~ }\)\(\LARGE\color{blue}{ \bf \frac{4}{3},~~ }\)\(\LARGE\color{blue}{ \bf \frac{4}{4},~~ }\)
\(\LARGE\color{blue}{ \bf \frac{4}{5}....~~ }\)

Answer 4

you can see the exponential decay.