Recognize and represent proportional relationships between quantities.
a. Understand that a proportion is a relationship of equality between ratios.
o Represent proportional relationships using tables and graphs.
o Recognize whether ratios are in a proportional relationship using tables and graphs.
o Compare two different proportional relationships using tables, graphs, equations, and verbal descriptions.
b. Identify the unit rate (constant of proportionality) within two quantities in a proportional relationship using tables, graphs, equations, and verbal descriptions.
c. Create equations and graphs to represent proportional relationships.
d. Use a graphical representation of a proportional relationship in context to:
o Explain the meaning of any point (x, y).
o Explain the meaning of (0, 0) and why it is included.
o Understand that the y-coordinate of the ordered pair (1, r) corresponds to the unit rate and explain its meaning. PDF