Things to Learn

  • Use the constant of proportionality to represent proportional relationships by equations in real- world contexts as they relate the equations to a corresponding ratio table or graphical representation.

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Lesson Summary
If a proportional relationship is described by the set of ordered pairs that satisfies the equation y = kx, where k is a positive constant, then k is called the constant of proportionality. The constant of proportionality expresses the multiplicative relationship between each x-value and its corresponding y-value.

Exercises and Practice
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