Answer:
![g(x)=2x+1](https://img.qammunity.org/2023/formulas/mathematics/college/d8xc872q4ap3gj7kik5p2nzv9wn4ck2lo6.png)
Explanation:
A vertical stretch would just multiply the x-value by a certain amount greater than one. So let's just choose some arbitrary value such as 2. From here the y-axis moves up 1 unit, so we add 1 to the function since the y-value is moving up 1
![g(x)=2x+1](https://img.qammunity.org/2023/formulas/mathematics/college/d8xc872q4ap3gj7kik5p2nzv9wn4ck2lo6.png)