Algebra-1

Question Analysis
This question tests the understanding of the relationship between independent and dependent variables in a scientific context. The student needs to identify which variable is being manipulated (independent).

Key Concept Explanation
In a study, the independent variable is the one that is controlled or manipulated by the researcher, while the dependent variable is the one that is measured or observed as a result of changes in the independent variable.

Step-by-step Solution
1. Identify the variable that is being actively cha...