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- CAHSEE
- STAR(CST) Test
- Example
- Introduction
- Resource
- Linked

# California's Common Core Content Standards

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- CAHSEE
- STAR(CST) Test
- Example
- Introduction
- Resource
- Linked

2.Recognize and represent proportional relationships between quantities. 9

- a.Decide whether two quantities are in a proportional relationship, e.g., by testing for equivalent ratios in a table or graphing on a coordinate plane and observing whether the graph is a straight line through the origin. 3
- b.Identify the constant of proportionality (unit rate) in tables, graphs, equations, diagrams, and verbal descriptions of proportional relationships. 6
- c.Represent proportional relationships by equations.
*For example, if total cost t is proportional to the number n of items purchased at a constant price p, the relationship between the total cost and the number of items can be expressed as t = pn.*4 - d.Explain what a point
*(x, y)*on the graph of a proportional relationship means in terms of the situation, with special attention to the points (0, 0) and (1,*r*) where*r*is the unit rate.