Question

Which is the graph of f(x) = 3(2/3)?

Answer 1

Answer:

D

Step-by-step explanation:

Answer 2

Answer:

Last graph on the right.

Step-by-step explanation:

Try substituting some values for x and see which graph is valid.

when x = 0, y = f(0) = 3 $(2/3)^{0}$ = 3 (1) = 3

When we compare this to the graphs, we immediately see that the first 2 are not correct because in those cases, when x=0, y = 6 (i.e not 3).

Next we try  x = 1

when x = 1, y = f(1) = 3 $(2/3)^{1}$ = 3 ($\frac{2}{3}$) = 2

Comparing the graphs ones again, show that only the last graph has x=1 and y = 2.