A straight line that represents a direct variation function must pass through the origin.
The equation of this line is y = _________.
Answer & Analysis
Analysis
Question Analysis
This question tests the student's ability to write the equation of a direct variation function given a point on the graph.
Key Concept Explanation
In a direct variation, the relationship between two variables and is given by . The constant of variation can be found by using any point on the graph, as . The equation of the line is then
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