Answer:
D. Translated 1 unit to the left and vertically stretched by a factor of 3.
Step-by-step explanation:
We are given the parent function, .
It is transformed to the function, .
As we know,
<em>Translation shifts the function in any direction.</em>
<em>Dilation stretches or shrinks the function along the axis.</em>
From the function, we can see that,
The parent function is translated 1 unit to the left and vertically stretched by a factor of 3 to obtain the new function.
Hence, option D is correct.