A direct variation function has a graph that is a straight line passing through the origin. If the constant of variation k is -2, the equation of the line can be written as y = ________.
Answer & Analysis
Analysis
Question Analysis
This question tests the student's understanding of the form of a direct variation equation and the role of the constant of variation , including negative values.
Key Concept Explanation
In a direct variation, the relationship between two variables and is given by , where is a non-zero constant. The graph of this relationship is a straight line passing through the origin, and can be positive or negative.
Step-by-step Solution
1. Identify the given constant of variation
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