How do you determine the constant of variation for the direct variation given (0, 0), (3, 12), (9, 36)?

Related questions

• What is Direct Variation?
• What does direct variation look like on a graph?
• What are examples of direct variation?
• How do you determine if a function is a direct variation when given a table?
• How do you write direct variation equations?
• What is the constant of proportionality "k"?
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