Question

x

f(x)

2

6

3

3

4

1.5

5

0.75

6

0.375

The table represents some points on the graph of an exponential function. Which function represents the relationship?

(1 point)

y=0.5x

y=24(5)x

y=24(0.5)x

y=6(0.5)x
Skip to navigation

Answer 1

The values halve when x increases by 1, so the base is 0.5. Use (2,6): A*(0.5)^2 = 6 → A*0.25 = 6 → A = 24.

Thus y = 24(0.5)^x.