Question

Which function represents a vertical stretch of an

exponential function?

y= 2x

y=3•2^x

y= 2^3x

Answer 1

Answer: B :)

Explanation:

edge 2021

Answer 2

Answer: SECOND OPTION.

Explanation:

Below are shown some transformations for a function f(x):

If
`df(x)` and
`d>1`, then the function is stretched vertically by a factor of
`d`.

If
`df(x)` and
`0<d<1`, then the function is compressed vertically by a factor of
`d`.

By definition Exponential function have the following form:

`f(x)=b^x`

Where
`b>0`

Based on the explained above, you can conclude that the function
`y=3*2^x` is an exponential function and it is stretched vertically by a factor of 3 (
`d=3`).