Question

Which exponential function does not have an x-intercept?
f(x) = 5x – 5 – 1
f(x) = 5x – 5 – 5
f(x) = -5x – 5 + 5
f(x) = -5x – 5 – 1

Answer 1

growth function does not have x-int when k >=0
\[y = b^x +k\]

decay function does not have x-int when k <= 0
\[y = -b^x + k\]