The table represents some points on the graph of an exponential function. Which function represents the relationship? x 2 3 4 5 6

f(x) 6 3 1.5 0.75 0.375

y=24\left(0.5\right)^{x}
y=6\left(0.5\right)^{x}
y=24\left(5\right)^{x}
y=0.5^{x}