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Laboratory / Mathematics

Functions as dependence

Change the rate and initial value in a linear rule. Predict which visual feature moves before checking: steepness belongs to the rate; vertical placement belongs to the initial value.

Change one thing
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Change the rate and initial value in a linear rule. Predict which visual feature moves before checking: steepness belongs to the rate; vertical placement belongs to the initial value. Current reading: The rate is 0.28 and the initial value is 3. Rate changes tilt; initial value changes vertical placement.output = rate × input + initial value
What changed

The rate is 0.28 and the initial value is 3. Rate changes tilt; initial value changes vertical placement.

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Experiment after prediction.

Before changing a control, say which visible feature should move and which should remain invariant. That prediction is the useful part of the experiment; motion alone is not evidence.

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