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Instructor Overview

Students look at the relationship between the number of flags manufactured and the stars on the flag and determine whether it represents a proportional relationship.

Key Concepts

  • The form of the equation of a proportional relation is y = kx, where k is the constant of proportionality.
  • A graph of a proportional relationship is a straight line that passes through the origin.
  • The constant of a proportionality in a graph of a proportional relationship is the constant ratio of y to x (the slope of the line).

Goals and Learning Objectives

  • Identify the constant of proportionality in a proportional relationship based on a real-world problem situation.
  • Write a formula using the constant of proportionality.
  • Analyze a graph of a proportional relationship.
  • Make a graph and determine if it represents a proportional relationship.
  • Identify the constant of proportionality in a graph of a proportional relationship.