Ratios and Proportions Review

True or False: The Constant of Proportionality is the SAME EXACT THING as a Unit Rate.

• True

• False

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CCSS.7.RP.A.1

CCSS.7.RP.A.2

What is Constant of Proportionality?

• It is the number that can never be found.

• It is the number that stays the same or equal because the given values are proportional.

• It is the average number in a table of values.

• It is the greatest number that can be found by multiplying or dividing.

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CCSS.7.RP.A.1

CCSS.7.RP.A.2

CCSS.7.RP.A.3

Which of the following is the correct formula for finding the constant of proportionality?

• k = x/y

• k = y/x

• y = k/x

• x = k/y

When we compare quantities, we compare them as _____ over ______.

• x over y

• y over x

• rate over one

• peanut butter over jelly

Tags

CCSS.7.RP.A.1

CCSS.7.RP.A.2

What is the constant of proportionality (in miles per hour) based on the table?

• 2 mph

• 45 mph

• 90 mph

• 135 mph

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CCSS.7.RP.A.1

CCSS.7.RP.A.2

Is this table proportional?

• No

• Yes

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CCSS.7.RP.A.2

CCSS.7.RP.A.3

Is the given table a proportional relationship? If so, what is the constant?

• Yes; 1/3

• Yes; 3

• Yes; 5

• No

Tags

CCSS.7.RP.A.1

CCSS.7.RP.A.2

CCSS.7.RP.A.3

A proportional relationship can be written as an equation in the form:

• y = k+x

• y = k-x

• y = kx

• y = k/x

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CCSS.7.RP.A.1

CCSS.7.RP.A.2

What does k represent in the equation y = kx?

• constant rate of change

• constant of proportionality

• the equation

• x/y

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CCSS.7.RP.A.2

CCSS.7.RP.A.3

Which equation is NOT proportional?

• y = 2x - 3

• y = 150x

• y = 1/2x

Tags

CCSS.7.RP.A.1

CCSS.7.RP.A.2