Question

What is the y intercept of y=4^x

Answer 1

All exponential functions have the y-intercept (0,1):

e^(0) = 1

10^0= 1

and so on.

Answer 2

Y intercept of a function can be obtained by evaluating the value of the function when x=0, i.e.

y-intercept of f(x) = f(0)

Here, f(x) = 4^(x)

so y-intercept = f(0) = 4^0 = 1