It would be the last equation.
If you draw a line approximately through the center of the data you would see that is crosses the y axis at approximately 6.

<h2>
Explanation:</h2>
- Vertical stretch is a non-rigid transformation because it causes a distortion in the graph of the function.
- Translation is a rigid transformation because the basic shape of the graph is unchanged.
Let:


So, the transformations:
Vertical stretch by a factor of 2:

Translation 4 units right:

<h2>Learn more:</h2>
Transformations in real life problems: brainly.com/question/1033817
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By subtracting the two equations
3y = 18
y = 6
-6x + 3(6) = -12
-6x = -30
x = 5
2x√8-x - x/2√8-x is the answer