Topic 2 Test Review (Math 2) - Proportional Relationships

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What is a proportional relationship?

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A proportional relationship is a relationship between two quantities where the ratio of one quantity to the other quantity is constant.

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What is the constant of proportionality?

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The constant of proportionality is the constant value (k) that relates two proportional quantities, often represented as y = kx.

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How do you identify a proportional relationship from a graph?

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A graph represents a proportional relationship if it is a straight line that passes through the origin (0,0).

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What does it mean if a table of values is proportional?

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A table of values is proportional if the ratios of corresponding values are constant.

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How can you find the constant of proportionality from a table?

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To find the constant of proportionality, divide the y-value by the corresponding x-value for any pair of values in the table.

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What is the equation of a proportional relationship?

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The equation of a proportional relationship can be written in the form y = kx, where k is the constant of proportionality.

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What does it mean for a graph to not be proportional?

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A graph is not proportional if it does not form a straight line through the origin or if the ratios of the y-values to the x-values are not constant.

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How do you determine if a statement about a rate is proportional?

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A statement about a rate is proportional if it can be expressed as a constant ratio between two quantities.

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What is an example of a proportional relationship in real life?

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An example of a proportional relationship is the relationship between distance and time when traveling at a constant speed.

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What is the significance of the slope in a proportional relationship?

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In a proportional relationship, the slope of the line represents the constant of proportionality.