Proportional relationships

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What is a proportional relationship?

Back

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

Tags

CCSS.7.RP.A.2A

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What is the constant of proportionality?

Back

The constant of proportionality is the constant value (k) that relates two proportional quantities in the equation y = kx.

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CCSS.7.RP.A.2B

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How can you identify a proportional relationship from a graph?

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A proportional relationship can be identified from a graph if the line passes through the origin (0,0) and is straight.

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CCSS.7.RP.A.2D

Front

What is the equation form of a proportional relationship?

Back

The equation form of a proportional relationship is y = kx.

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CCSS.7.RP.A.2C

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If y = 3x, what is the constant of proportionality?

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The constant of proportionality is 3.

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CCSS.7.RP.A.2B

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What does it mean if a relationship is non-proportional?

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A non-proportional relationship means that the ratio between the two quantities is not constant.

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CCSS.7.RP.A.2D

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How do you determine if a table represents a proportional relationship?

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To determine if a table represents a proportional relationship, check if the ratios of corresponding values are constant.

Tags

CCSS.7.RP.A.2A

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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.

Tags

CCSS.7.RP.A.2A

Front

If the equation is y = 5x, what happens to y when x is doubled?

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When x is doubled, y also doubles, demonstrating the constant ratio.

Tags

CCSS.5.OA.B.3

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What is the graphical representation of y = 2x?

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The graphical representation is a straight line passing through the origin with a slope of 2.