Answer: D. Horizontal stretch by a factor of 3.
Step-by-step explanation:
Below are some transformations for a function :
If , then it is shifted "k" units down.
If , then it is shifted rigth"k" units.
If , then it is reflected across the x-axis.
If and , then it is stretched vertically by a factor of "c".
If and , then it is stretched horizontally by a factor of .
Based on this, the transformations done to the function to get the function are:
- It is shifted 7 units down.
- It is shifted rigth 4 units.
- It is reflected over the x-axis.
- It is vertically stretched by a factor of 3.
Therefore, the transformations that was not done to the function to get the function is:
Horizontal stretch by a factor of 3.