Variation

If y varies directly as x, and x = 5 when y = 20, what is the constant of variation, k?

• k = 0.25

• k = 4

• k = 100

• k = 25

Which set of ordered pairs shows a relation in which x and y vary inversely?

• {(3, 6), (4, 6), (5, 6)}

• {(3, 6), (5, 7), (7, 8)}

• {(3, 6), (4, 8), (5, 10)}

• {(3, 6), (9, 2), (18, 1)}

Tags

CCSS.HSF-LE.A.1B

Which statement best describes the table?

• x and y vary directly because xy = 3.

• x and y vary directly because y = 3x.

• x and y vary inversely because y = ¹/₃x.

• x and y vary inversely because xy = ¹/₃.

Tags

CCSS.HSF-LE.A.1B

Which is the graph of a direct variation?

• A

• B

• C

• D

Tags

CCSS.8.EE.B.5

The ordered pair (5, 20) is an element of an inverse variation. What is the constant of variation?

• 4

• 5

• 25

• 100

In the table shown, y and x are inversely proportional. What is the value of n?

• 16

• 8

• 6

• 12