A data set that appears exponential is modeled by the function 𝑓 given by 𝑓𝑥=𝑎𝑏𝑥. When the data are represented use a semi-log plot, where the vertical-axis is scaled use a natural log, a linear pattern is apparent.
If the slope of the linear pattern is negative, what does that imply about the value of 𝑏?