Unit 2 End Assessment

Introducing Proportional Relationships

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Unit 2

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2A: Representing Proportional Relationships with Tables

I can use equivalent ratios to describe scaled copies of shapes.I know that two recipes will taste the same if the ingredients are in equivalent ratios.I understand the terms proportional relationship and constant of proportionality.I can use a table to reason about two quantities that are in a proportional relationship.I can find missing information in a proportional relationship using a table.I can find the constant of proportionality from information given in a table.

2B: Representing Proportional Relationships with Equations

I can write the the constant of proportionality as an entry in a table.I can write an equation of the form y=kx to represent a proportional relationship described by a table or a story.I can find two constants of proportionality for a proportional relationship.I can write two equations representing a proportional relationship described by a table or story.I can relate all parts of an equation like y=kx to the situation it represents.I can find missing information in a proportional relationship using the constant of proportionality.

2C: Comparing Proportional and Nonproportional Relationships

I can decide if a relationship represented by a table could be proportional and when it is definitely not proportional.I can decide if a relationship represented by an equation is proportional or not.I can ask questions about a situation to determine whether two quantities are in a proportional relationship.I can solve all kinds of problem involving proportional relationships.

2D: Representing Proportional Relationships with Graphs

I know that the graph of a proportional relationship lies on a line through (0,0).I understand the information given by graphs of proportional relationships that are made of up of points or a line.I can find the constant of proportionality from a graph.I can draw the graph of a proportional relationship given a single point on the graph (other than the origin).I know that the steeper graph of two proportional relationships has a larger constant of proportionality.I can compare two, related proportional relationships based on their graphs.I can interpret a graph of a proportional relationship using the situation.I can write an equation representing a proportional relationship from a graph.

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