Question

Let f(x)=8^x .

Which function represents a transformation of f(x) by a vertical stretch with factor 2?

A. g(x)=8^2x
B. g(x)=8 1/2^x
C. g(x)=2⋅8^x
D. g(x)=1/2⋅8^x

Answer 1

Hey there I just took the k12 test and the correct answer was C. g(x)=2⋅8^x

Answer 2

the answer is letter D. g(x)=1/2*8^x represent the vertical stretch of the given function by a factor of 2