Exploring Proportionality Constants from Tables

What does it mean when two quantities are proportional?

• Their ratio remains constant.

• They are both equal to the same number.

• They are unrelated.

• They increase at the same rate.

Tags

CCSS.7.RP.A.2A

How do you find the constant of proportionality in the equation y = r * x?

• Divide y by x

• Multiply x by y

• Add x to y

• Subtract y from x

Tags

CCSS.7.RP.A.2B

What is the constant of proportionality if x = 4 and y = 10?

• 2.0

• 2.5

• 6.5

• 5.0

Tags

CCSS.7.RP.A.2B

Does the constant of proportionality remain the same for different values of x and y?

• Yes, it always remains the same.

• No, it changes with different values.

• It remains the same only for even numbers.

• It is only constant for prime numbers.

Tags

CCSS.7.RP.A.2B

What is the value of y when x = 5 and the constant of proportionality is 2.5?

• 12.5

• 10.0

• 7.5

• 15.0

Tags

CCSS.7.RP.A.2B

If x = 10, what is the value of y given the constant of proportionality is 2.5?

• 20

• 35

• 25

• 30

Tags

CCSS.7.RP.A.2B

What method is used to verify the constant of proportionality?

• Multiplication

• Addition

• Division

• Subtraction

Tags

CCSS.7.RP.A.2B

What is the final step in confirming the constant of proportionality?

• Asking someone else

• Checking it against all given x and y pairs

• Calculating it for just one pair of x and y

• Guessing its value

Tags

CCSS.7.RP.A.2B

What is the constant of proportionality in the given problem?

• 2

• 2.5

• 3

• 3.5

Tags

CCSS.7.RP.A.2B