Problem

The graph of $y=2^{x}$ is the solid black graph below. Which function represents the dotted graph?

Solution

Step 1 :Identify the transformation between the solid black graph and the dotted graph

Step 2 :Notice that the dotted graph is the solid black graph shifted 1 unit to the right and stretched vertically by a factor of 2

Step 3 :Write the transformation as an equation: \(y = 2(2^{x-1})\)

Step 4 :Simplify the equation: \(y = 2^{x+1}\)

Step 5 :\(\boxed{y = 2^{x+1}}\)

From Solvely APP
Source: https://solvelyapp.com/problems/22051/

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