Algebra-2

Question Analysis
This question tests the student's understanding of horizontal stretches. The key is to recognize that a horizontal stretch by a factor of 3 means that each x-coordinate of the original function is multiplied by .

Key Concept Explanation
Horizontal stretch/compression is determined by the coefficient of the input variable within the function. For a horizontal stretch by a factor of , the transformed function is .

Step-by-step Solution
1. Identify the given information: The parent function is and it is horizontally stretched by a factor of 3.
2. Determine the coefficient