How to Find Constant of Proportion

Name the constant of proportionality.

• 20

• 40

• 16

• 35

Tags

CCSS.7.RP.A.2B

The graph shows the total number of markers in 1, 2, 3, and 4 boxes of markers. What is the constant of proportionality?

Mathematical Equivalence

ON

Answer explanation

The constant of proportionality is found at the ordered pair (1, k), or (1, 8) so the constant is 8.

However, you can take any point along the line, except (0, 0) and divide the y-coordinate by the x-coordinate to get the constant of proportionality.

Tags

CCSS.7.RP.A.2B

What is the constant of proportionality that relates y to x?

Mathematical Equivalence

ON

Tags

CCSS.7.RP.A.2B

Is the given table a direct variation? If so, what is the constant?

• Yes; 1/3

• Yes; 3

• Yes; 5

• No

• A
• B
• C
• D

Tags

CCSS.7.RP.A.2B

In the equation y = 14x, what is the constant of proportionality?

• y

• x

• 14

Tags

CCSS.7.RP.A.2B

Name the constant of proportionality.

• 20

• 40

• 16

• 35

Tags

CCSS.7.RP.A.2B

If x and y are in an inverse variation then which of the following is correct?

• x - y = constant

• x + y = constant

• xy = constant 

• x⁄y is constant 

Tags

CCSS.HSF-LE.A.1B

Y varies directly with x, and y is 84 when x is 16. Which equation represents this situation?

• y=1344x

• y=100x

• y=5.25x

• y=4/21x

Does the table represent a proportional relationship?

• Yes.

• No.

Tags

CCSS.7.RP.A.2A