Question

F(x) += 2(3)^x+1 + 4

The graph of f(x) is stretched vertically by a factor of 2 to form the graph of g(x).
What is the equation of g(x)?

The x+1 is the exponent. Explain how you work this out.

Answer 1

`f(x) =2( 3^(x+1))+4`

Stretching a graph vertically by a factor of 2 is the result of scaling (multiplying) the function by 2.

g(x):


`g(x)=2f(x)`

=>


`g(x)=4 (3^(x+1))+8`