The value of b tells us whether the function is growth or decay.
If b>1, the function represents exponential growth.
If 0
Let's consider the given function.
y= 100 ( 0.25 )^x
We can see that b= 0.25. Since b<1, the function represents exponential decay.
Determining the y-intercept
The y-intercept of an exponential function is (0,a).
Looking back at the given function, we can see that a= 100. Therefore, the y-intercept is (0, 100).
