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A-Level Biology OCR A

Calculate Rate Change Linear Units Explain Graph Showing

For linear graphs, the rate of change is the gradient (Δy/Δx), with units as dependent variable per independent variable.

For a linear graph, the rate of change is calculated as the gradient (Δy/Δx) between two points, with units of the dependent variable per unit of the independent variable.

Front Explain how to calculate the rate of change from a graph showing a linear relationship. (and how to determine units)
Back Calculating rate of change from linear relationship:
  • Pick two points on the line, calculate ∆y/∆x (gradient)
  • Suitable units will be units of dependent variable per unit independent

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