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Identify what stays constant - Online practice 2

Read the information, then answer the questions. An adult may read the instructions aloud. Show your working where asked.

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Two separate models use positive x. Direct model: y = 4x. Inverse model: z = 36/x. In the first, y/x stays constant; in the second, xz stays constant. Evaluate x = 3 and x = 6. The equations are stated mathematical models, not proof that any real workload scales perfectly.

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