Write an Equation to Describe the Variation $x$ Varies Jointly As $y$

question 61

Multiple Choice

Write an equation to describe the variation. Use k for the constant of proportionality.
- $x$ varies jointly as $y$ and $z$ .

• A) \(x = k y z\)
• B) \(x = k + y + z\)
• C) \(x y z = k\)
• D) \(x + y + z = k\)

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