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Vincent is calculating values for a direct variation which has a constant of variation of k=13.

Which pair of values in the table below did Vincent calculate incorrectly?

x 3 6 9 12
y 1 2 6 4

Respuesta :

mhanifa

Answer:

  • (9, 6) is incorrect

Step-by-step explanation:

It seem the constant of variation is k = 1/3.

The equation is:

  • y = kx or
  • y = 1/3x

Let's verify the values in the table:

  • 1 = 3*1/3 ⇒ 1 = 1, correct
  • 2 = 6*1/3 ⇒ 2 = 2, correct
  • 6 = 9*1/3 ⇒ 6 = 3, incorrect
  • 4 = 12*1/3 ⇒ 4 = 4, correct

(9,6)

Let's verify

find k

  • k=y/x
  • k=1/3

So

  • 6=1/3(9)
  • 6≠3

Hence it's incorrect

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